CN110298125A - A kind of fatigue analysis method based on virtual test field technology - Google Patents
A kind of fatigue analysis method based on virtual test field technology Download PDFInfo
- Publication number
- CN110298125A CN110298125A CN201910595669.2A CN201910595669A CN110298125A CN 110298125 A CN110298125 A CN 110298125A CN 201910595669 A CN201910595669 A CN 201910595669A CN 110298125 A CN110298125 A CN 110298125A
- Authority
- CN
- China
- Prior art keywords
- model
- road
- test
- tire
- road surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/15—Vehicle, aircraft or watercraft design
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/06—Power analysis or power optimisation
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Geometry (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Evolutionary Computation (AREA)
- Computational Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Pure & Applied Mathematics (AREA)
- Aviation & Aerospace Engineering (AREA)
- Automation & Control Theory (AREA)
- Vehicle Body Suspensions (AREA)
- Tires In General (AREA)
Abstract
The present invention discloses a kind of fatigue analysis method based on virtual test field technology, comprising: the durable road surface digitlization in actual experimental field generates the digital road surface of durable road；By Ftire tire test and parameter identification, model attributes file is generated；It establishes multi-body dynamics automobile model and debugs verifying；Virtual Load signal is extracted, Virtual Load spectrum is obtained；Virtual Load spectrum is handled, and is input to components grid model and is carried out fatigue mechanisms.Through the invention, it can be extracted in automobile research early stage by the automobile boundary load data of Virtual Test Field simulated extraction, fatigue endurance analysis efficiency can be effectively improved, especially in exploitation early period of no physics sample car, it can be avoided the large-scale defect in components exploitation with this analysis method, promote the abundant verifying of vehicle fatigue endurance analysis, improves product quality.
Description
Technical field
The invention belongs to automotive developments, especially relate to a kind of analysis of fatigue side based on virtual test field technology
Method.
Background technique
In automotive development, analysis of fatigue is the important analysis process of automobile.Research and development engineer obtains in actual operation
The dynamic load data of the components such as body of a motor car, suspension rod, subframe are taken, i.e., the dynamic load course of each components is defeated
Enter, is the premise for carrying out automobile analysis of fatigue work.Traditional analysis method is carried out after the assembly is completed in First exploitation vehicle
The road spectrum acquisition test at real car test site, obtains core wheel six square phase, acceleration, the power of two power rod pieces, spring force, damper
The data such as displacement；Again by building the multi-body dynamics automobile model of corresponding vehicle, the signals such as the wheel mental and physical efforts of acquisition are subjected to mould
Type input or virtual iteration to obtain the power transitive relation and load history signal between internal rod, then carry out components
Analysis of fatigue.This analysis method needs to compose acquisition test by individual test site road and load emulates decomposable process, week
Phase is long, at high cost, and durable development process arrangement more lags, and structure and the arrangement form of chassis part finalize the design almost, this
When carry out the structural adjustment and optimization that analysis of fatigue is not easy to vehicle body and chassis part again, or even cause entire automotive development week
Delaying for phase, influences launch.
Summary of the invention
In view of this, the present invention proposes the fatigue analysis method based on virtual test field technology, it through the invention can be
Automotive development early stage obtains the dynamic load data between vehicle body and suspension internal rod and carries out analysis of fatigue.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of fatigue analysis method based on virtual test field technology, comprising:
S1, the durable road surface digitlization in actual experimental field, generate the digital road surface of durable road；
S2, pass through Ftire tire test and parameter identification, generation model attributes file；
S3, it establishes multi-body dynamics automobile model and debugs verifying；
S4, Virtual Load signal is extracted, obtains Virtual Load spectrum；
S5, Virtual Load spectrum are handled, and are input to components grid model and are carried out fatigue mechanisms.
Further, the durable digitized specific method in road surface described in step S1 includes:
S11, for according to design drawing strict construction complete, road surface characteristic can use tool road measured directly, first
The threedimensional model of this kind of road of three-dimensional drawing Software on Drawing is utilized according to highway layout drawing；Again by software road pavement surface layer into
Row triangulation, sizing grid according to road surface total length and local feature selecting size dimension；Finally by grid dividing
Road surface file afterwards carries out format editor, defines rubbing for the node serial number in grid road surface, connection relationship and each planar delta
Coefficient is wiped, to generate the digital road surface of this kind of durable road；
S12, for irregular road, using the method for laser scanning, first using the laser scanning being mounted on automobile
Instrument is scanned test site road, using optical refraction principle, the phase of precise measurement laser probe and each characteristic point in road surface
It adjusts the distance and angle, while position and orientation with the real-time recording laser scanner of GPS device with respect to the road, by above two groups
Data can inverse go out road feature distribution point cloud model, extracted finally by the data to road point cloud model and square net
Lattice divide, and obtain the digital road surface for generating this kind of durable road.
Further, the specific method of Ftire tire test described in step S2 includes:
The modeling of Ftire tire, surface layer and the main body of tire are separated, are indicated with the banding node of 80-200 lumped mass
Cord, steel wire, rubber material in tire construction increase spring and damping, describe the vibration of tire between node and node
And cornering behavior.
Further, the specific method of parameter identification described in step S2 includes:
The tire of characteristic type is tested, and carries out identification of Model Parameters based on test data, generates model
Property file；
Wherein, in tire test, operating condition of test needed for modeling first to Ftire is combed, by each operating condition and rack
Power of test combines, and determines tire loading range further according to tyre performance and rack ability；
During Model Distinguish, operator chooses tire multiple parameters, while according to test result and model
The comparison for exporting result carries out reasonable combination and adjustment to different parameters, continues to optimize the accuracy of tire model output result,
The model attributes file that can be taken into account in tire tread with face external characteristics is finally obtained, can be used to Dynamics Simulation.
Further, the specific method that multi-body dynamics automobile model is established described in step S3 includes:
Multi-body dynamics automobile model is established using MSC.Adams software, the constraint and stress retained between each connector is closed
System；The different piece of automobile, including McPherson front suspension system, torsion beam rear suspension system are wherein established firstly the need of subsystem
System, power assembly system, bodywork system, steering system, tire system, stabilizer bar system, braking system；Then establish system with
Bushing connection between system, is arranged bushing according to practical connection relationship in software and connects for rigid connection or caoutchouc elasticity,
Guarantee that the connection of each section and stress are identical as real vehicles in model.
Further, the debugging verifying of multi-body dynamics automobile model described in step S3, the debugging packet that model is carried out
It includes:
The components for easily causing deformation are carried out flexibility processing by S31, parts thereof flexibility；
S32, the input of elastic element parameter, mainly include rubber bushing, spring and damper；Rubber bushing measures quiet respectively
Rigidity and dynamic stiffness characteristic；Damper measures the damping force characteristic under otherwise limit loading velocity；Spring carries out stiffness measurement；
S33, suspension static characteristic debugging, forward and backward suspension is carried out respectively vertical stiffness, longitudinal rigidity, lateral rigidity with
And the emulation of roll stiffness, comparative test data are finely adjusted the parameter of rubber bushing, spring, stabiliser bar, so that emulation
Suspension rate result is consistent with test value；
S34, suspension dynamic character debugging, the transmission characteristic based on suspension, i.e., in damper upper end by unsteadiness of wheels
Response process carries out vehicle frequency sweep test with pumping signal on four column test-beds, and establishes core wheel vibration acceleration
With the vibration transfer function relationship of damper upper end vibration acceleration；Same pumping signal is input to four virtual column platforms
It in frame, and is emulated, equally establishes transmission function；The damping characteristic of damped coefficient and damper to rubber bushing in suspension
Curve is adjusted, so that two transmission functions tend to be identical.
Further, the specific method of extraction Virtual Load signal described in step S4 includes:
Test site number road surface will be increased on the basis of multi-body dynamics automobile model after debugging verifying, and set with it is real
Driving route identical speed in border carries out the solution of MSC.Adams software emulation, to obtain the power between each components of automotive interior
Transitive relation；Obtain Virtual Load signal by the request unit established in model, that is, after emulating, request meeting
The processes such as stress variation or change in displacement by each tie point are recorded and are exported in real time, generate time-domain signal；In addition, other are believed
Breath includes change in displacement, the acceleration change of wheel hop, bushing deflection of damper or more installation point, is all passed through
Request record and output.
Further, the detailed process of step S5 includes:
S51, components 3D digital-to-analogue is established, and logarithmic mode carries out taking out shell and gridding, generates finite element model, optimization part
Area grid shape defines boundary condition and applies load and weld seam and solder joint definition；
S52, model analysis calculate components intrinsic frequency, investigate the kinetic characteristics of the component structural；
S53, the node for inputting the components finite element model and unit information, material and S-N characteristic information, each input are logical
The Virtual Load in road is composed and unitstress value, calculates the fatigue damage value of the components various pieces, the area higher to impairment value
Domain is subject to structure optimization according to actual life situation.
Compared with the existing technology, present invention has the advantage that
Through the invention, can be in automobile research early stage by the automobile boundary load data of Virtual Test Field simulated extraction
It is extractable to come out, fatigue endurance analysis efficiency can be effectively improved, especially in exploitation early period of no physics sample car, with this point
Analysis method can be avoided the large-scale defect in components exploitation, promote the abundant verifying of vehicle fatigue endurance analysis, improve product
Quality.
Detailed description of the invention
Fig. 1 is Virtual Test Field of embodiment of the present invention emulation schematic diagram；
Fig. 2 is the components tie point input load spectrum of the embodiment of the present invention.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
Below in conjunction with attached drawing, the present invention will be described in detail.
Schematic diagram is emulated for Virtual Test Field of the present invention as shown in Figure 1, it is of the present invention a kind of based on Virtual Test Field skill
The fatigue analysis method of art includes the content of five aspects altogether.
(1) the durable road surface digitlization in actual experimental field
True proving ground is that the different performance of verifying automobile is divided into multiple road type, wherein durable road is just
To be built to verify the fatigue endurance performance of automobile, generally comprise vibration road, sinusoidal wave paths, hollow road, distortion road with
And Belgian road, pebble path, irregular concrete road etc..Two kinds of technology hands can be divided into for the digitized process of durable road
Section: manual creation and laser scanning.
The digital road surface of manual creation is can be straight with tool for road surface characteristics such as vibration road, hollow road, distortion roads
Connect the road of measurement, the characteristic size of this kind of road protrusions or recess is completed according to design drawing strict construction, therefore
The threedimensional model that this kind of road can be drawn using three-dimensional drawing software CATIA according to highway layout drawing, recycles Hyermesh
Software road pavement surface layer carries out triangulation；Sizing grid needs the total length and local feature selecting 10- according to road surface
200 millimeters of size dimension, the purpose of size selection is first is that in order to guarantee that the grid model on road surface can accurately show true road
The feature in face guarantees the efficiency when later period carries out Dynamics Simulation second is that make the road surface file generated small as far as possible；Finally
Road surface file after grid dividing is subjected to format editor, node serial number, connection relationship and each three in definition grid road surface
The coefficient of friction of angle plane, to generate the digital road surface of this kind of durable road, format is * .rdf.
The digital road surface of laser scanning is then for Belgian road, pebble path, irregular concrete road, gravel road etc.
Road can expend the huge time if these roads are carried out with the precise measurement of each brick or cobble geomery and height
With human resources, therefore is not suitable for the method that manually creates and carries out road surface digitized process, and the method for using laser scanning
It then can be effectively reduced measurement workload, and can effectively ensure that the precision on digital road surface.This method uses be mounted on first
Laser scanner on automobile is scanned test site road, using optical refraction principle, precise measurement laser probe and road
The relative distance and angle of each characteristic point in face, while the position with the real-time recording laser scanner of GPS device with respect to the road
And orientation, by above two groups of data can inverse go out road feature distribution point cloud model, finally by road point cloud model
Data are extracted and square net divides, and grid precision can be obtained so finely to 5*5 millimeters and generate this kind of durable road
Digital road surface, format be * .crg.
(2) Ftire tire test and parameter identification generate model attributes file,
Tire is the mere contact part of automobile and road, for bearing automobile weight and alleviates vehicle caused by road excitation
Vibration plays conclusive effect, therefore constructs Virtual Test Field and must consider that tire makees the transmitting of vehicle mechanical characteristic
With.
Ftire tire model is emulated suitable for durable operating condition, and modeling method is that the surface layer of tire and main body separate, and is used
The banding node of 80-200 lumped mass indicates the materials such as the cord in tire construction, steel wire, rubber, node and node it
Between increase spring and damping, so as to characteristics such as the vibration and the lateral deviations that describe tire.
It is tested with Ftire tire model firstly the need of by the tire of characteristic type, and based on test data
Identification of Model Parameters is carried out, model attributes file is generated, could effectively carry out Dynamics Simulation.It is first in tire test
Operating condition of test needed for first modeling to Ftire combs, and each operating condition is combined with engine bench test ability, further according to tyre performance
Tire loading range is determined with rack ability, to greatest extent close to the force status of tire, in order to cover tire in not people having a common goal
Field of load when in the operating condition of road.Specific measurement condition includes: lateral deviation test, vertical sliding test, the test of three-dimensional Static stiffness, dynamic stiffness examination
Test, convex block test, external dimensions and contact trace measurement etc.；Test-bed includes: tire six square phase testboard bay, tire stiffness
Testboard bay, high speed uniformity in tires testboard bay.During Model Distinguish, operator is needed to carry out tire multiple parameters
Different parameters are carried out reasonable combination and adjusted by experienced selection, while the comparison according to test result and model output result
It is whole, continue to optimize the accuracy of tire model output result, the finally obtained mould that can be taken into account in tire tread with face external characteristics
Type property file can be used to Dynamics Simulation.
(3) multi-body dynamics automobile model is established and debugging is verified
Multi-body dynamics automobile model is established using MSC.Adams software, it is advantageous that can simplify vehicle structure, together
When retain constraint between each connector and stress relationship, and for actual design of part and be not concerned with.In practical modelling operability
In, it is necessary first to subsystem establishes the different piece of automobile, such as McPherson front suspension system, torsion beam rear-suspension system, power
Assembly system, bodywork system, steering system, tire system, stabilizer bar system, braking system.By bushing between system and system
Bushing can be arranged for rigid connection or caoutchouc elasticity connection, to guarantee mould in connection in software according to practical connection relationship
The connection of each section and stress are identical as real vehicles in type.
If the model is used for Virtual Test Field emulation, needing the debugging carried out to model includes the following aspects:
(3.1) parts thereof flexibility.Object more or less can all be deformed by the effect of external force, and automobile is true
In real use environment when driving, the swing arm and torsion-beam in chassis can all bend or torsional deflection because stress acts on, special
It is not such as stabiliser bar and torsion beam, the use of this structure is originally to make two sides wheel different degrees of upward or downward
Movement when, stabiliser bar or torsion beam two sides motion amplitude are inconsistent, so that torsional moment is generated inside it, to help vehicle
Wheel is restored to sustained height state.Therefore this components for easily causing deformation are subjected to flexibility processing, can be improved mould
The accuracy of type emulation, to obtain more accurate Virtual Test Field load data.
(3.2) elastic element parameter inputs.Elastic element in automobile mainly includes rubber bushing, spring and damper,
Wherein rubber bushing and damper are in nonlinear characteristic, and the performance under stable state load and high frequency pumping is entirely different,
And spring can then show as stable linear characteristic, deformation size is only related with loading force.The parameter of elastic element, which obtains, to be needed
Will be by way of test measurement, the components parameter measurement for Virtual Test Field emulation needs especially processing.Rubber bushing
Need to measure Static stiffness and dynamic stiffness characteristic respectively, Static stiffness needs to guarantee to greatest extent the complete of its non-linear rigidity region
Property；Damper needs to measure the damping force characteristic under otherwise limit loading velocity, and highest loading velocity must not be lower than 3.0m/s；Bullet
The stiffness measurement of spring is not required to particular/special requirement, but to ensure the accuracy of test data.
(3.3) suspension static characteristic is debugged.According to suspension kinematical and elastic movement theory, when wheel is moving up and down
When, the variation of wheel alignment angle and rod piece stress can be caused.Vertical stiffness, longitudinal rigidity, side are carried out respectively to forward and backward suspension
Emulation to rigidity and roll stiffness, comparative test data carry out the Parameter File of rubber bushing, spring, stabiliser bar micro-
It adjusts, so that the suspension rate result of emulation is consistent with test value.It is specifically intended that when carrying out the emulation of suspension rate, it must
Need consider the nonlinear area and buffer clearance of suspension rate, the simulation value of the comparison suspension rate of maximum magnitude with
Test value.
(3.4) suspension dynamic character is debugged.Due in suspension frame structure there are non-linear elements such as rubber bushing, dampers,
During being suspended in dynamic exciting, since the influence of damping is so that suspension performance changes, and Virtual Test Field emulation is just
It is a virtual automobile dynamic traveling simulation process, it is therefore desirable to be debugged to the damping characteristic of bushing and damper.It adjusts
Method for testing is the transmission characteristic based on suspension, i.e. the response process in damper upper end by unsteadiness of wheels.Swash with specific
It encourages signal and carries out vehicle frequency sweep test on four column test-beds, and establish core wheel vibration acceleration and the vibration of damper upper end
The vibration transfer function relationship of acceleration；Same pumping signal is input in four virtual column racks, and is emulated,
Equally establish transmission function；The damping characteristic curve of damped coefficient and damper to rubber bushing in suspension is adjusted, and is made
It obtains two transmission functions and tends to be identical.
(4) Virtual Load extracts
It is the road condition and speed according to specified sequence when test vehicle carries out endurance quality verifying in test site
Traveling, therefore when carrying out Virtual Test Field emulation, it needs to increase on the basis of the multi-body dynamics automobile model after debugging
Add test number of fields word road surface, and set speed identical as actual travel program, carries out the solution of MSC.Adams software emulation, thus
Obtain the transitive relation of the power between each components of automotive interior.The extraction of Virtual Load signal is by establishing in model
Request unit obtains, and after emulation, request can change the stress of each tie point or the processes such as change in displacement
It records and exports in real time, generate time-domain signal.In addition, the change in displacement of installation point, wheel hop above and below other such as dampers
The information such as acceleration change, bushing deflection can pass through request record and output.
(5) Virtual Load spectrum is filtered, deburring, the processing such as combination, be input to components grid model carry out it is tired
Labor calculates.Process is as follows:
1) components 3D digital-to-analogue is established, and logarithmic mode carries out taking out shell and gridding, generates finite element model, optimizes partial zones
Domain mesh shape defines boundary condition and applies load and weld seam and solder joint definition.
2) model analysis calculates components intrinsic frequency, investigates the kinetic characteristics of the component structural.
3) node and unit information, material and S-N characteristic information, each input channel of the components finite element model are inputted
Virtual Load spectrum (as shown in Figure 2) and unitstress value, calculate the fatigue damage value of the components various pieces, impairment value is inclined
High region is component structural service life weak area, needs to be subject to structure optimization according to actual life situation, avoids stress collection
In, reduce the region impairment value.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of fatigue analysis method based on virtual test field technology characterized by comprising
S1, the durable road surface digitlization in actual experimental field, generate the digital road surface of durable road；
S2, pass through Ftire tire test and parameter identification, generation model attributes file；
S3, it establishes multi-body dynamics automobile model and debugs verifying；
S4, Virtual Load signal is extracted, obtains Virtual Load spectrum；
S5, Virtual Load spectrum are handled, and are input to components grid model and are carried out fatigue mechanisms.
2. the method according to claim 1, wherein the durable digitized specific method in road surface described in step S1
Include:
S11, for according to design drawing strict construction complete, road surface characteristic can use tool road measured directly, be first depending on
Highway layout drawing utilizes the threedimensional model of this kind of road of three-dimensional drawing Software on Drawing；Three are carried out by software road pavement surface layer again
Angle grid dividing, sizing grid according to road surface total length and local feature selecting size dimension；It finally will be after grid dividing
Road surface file carries out format editor, the friction system of node serial number, connection relationship and each planar delta in definition grid road surface
Number, to generate the digital road surface of this kind of durable road；
S12, for irregular road, using the method for laser scanning, first using the laser scanner pair being mounted on automobile
Test site road is scanned, using optical refraction principle, precise measurement laser probe and each characteristic point in road surface it is opposite away from
From with angle, while with the real-time recording laser scanner of GPS device with respect to the road position and orientation, by above two groups of data
Can inverse go out road feature distribution point cloud model, finally by road point cloud model data extract and square net draw
Point, obtain the digital road surface for generating this kind of durable road.
3. the method according to claim 1, wherein the specific method of Ftire tire test described in step S2
Include:
The modeling of Ftire tire, surface layer and the main body of tire separate, and indicate tire with the banding node of 80-200 lumped mass
Cord, steel wire, rubber material in structure, increased between node and node spring and damping, describe tire vibration and
Cornering behavior.
4. the method according to claim 1, wherein the specific method of parameter identification described in step S2 includes:
The tire of characteristic type is tested, and carries out identification of Model Parameters based on test data, generates model attributes
File；
Wherein, in tire test, operating condition of test needed for modeling first to Ftire is combed, by each operating condition and engine bench test
Ability combines, and determines tire loading range further according to tyre performance and rack ability；
During Model Distinguish, operator chooses tire multiple parameters, while exporting according to test result and model
As a result comparison carries out reasonable combination and adjustment to different parameters, continues to optimize the accuracy of tire model output result, finally
It obtains that the model attributes file in tire tread with face external characteristics can be taken into account, can be used to Dynamics Simulation.
5. the method according to claim 1, wherein establishing multi-body dynamics automobile model described in step S3
Specific method includes:
Multi-body dynamics automobile model is established using MSC.Adams software, retains constraint and stress relationship between each connector；Its
In the different piece of automobile, including McPherson front suspension system, torsion beam rear-suspension system, power are established firstly the need of subsystem
Assembly system, bodywork system, steering system, tire system, stabilizer bar system, braking system；Then establish system and system it
Between bushing connection, according to practical connection relationship be arranged in software bushing for rigid connection or caoutchouc elasticity connect, guarantee mould
The connection of each section and stress are identical as real vehicles in type.
6. the method according to claim 1, wherein the debugging of multi-body dynamics automobile model described in step S3
Verifying, the debugging carried out to model include:
The components for easily causing deformation are carried out flexibility processing by S31, parts thereof flexibility；
S32, the input of elastic element parameter, mainly include rubber bushing, spring and damper；Rubber bushing measures Static stiffness respectively
With dynamic stiffness characteristic；Damper measures the damping force characteristic under otherwise limit loading velocity；Spring carries out stiffness measurement；
S33, the debugging of suspension static characteristic, carry out vertical stiffness, longitudinal rigidity, lateral rigidity and side to forward and backward suspension respectively
The emulation for rigidity of inclining, comparative test data are finely adjusted the parameter of rubber bushing, spring, stabiliser bar, so that the suspension of emulation
Rigidity result is consistent with test value；
S34, suspension dynamic character debugging, the transmission characteristic based on suspension, the i.e. response in damper upper end by unsteadiness of wheels
Process carries out vehicle frequency sweep test with pumping signal on four column test-beds, and establishes core wheel vibration acceleration and subtract
Shake the vibration transfer function relationship of device upper end vibration acceleration；Same pumping signal is input to four virtual column racks
In, and emulated, equally establish transmission function；The damping characteristic of damped coefficient and damper to rubber bushing in suspension is bent
Line is adjusted, so that two transmission functions tend to be identical.
7. the method according to claim 1, wherein extracting the specific side of Virtual Load signal described in step S4
Method includes:
Test site number road surface will be increased on the basis of multi-body dynamics automobile model after debugging verifying, and set and practical row
The identical speed of program is sailed, the solution of MSC.Adams software emulation is carried out, to obtain the biography of the power between each components of automotive interior
Pass relationship；Virtual Load signal is obtained by the request unit established in model, that is, after emulating, request can will be each
The stress of a tie point changes or the processes such as change in displacement are recorded and exported in real time, generates time-domain signal；In addition, other information packet
Change in displacement, the acceleration change of wheel hop, bushing deflection of damper or more installation point are included, all passes through request and remembers
Record and output.
8. the method according to claim 1, wherein the detailed process of step S5 includes:
S51, components 3D digital-to-analogue is established, and logarithmic mode carries out taking out shell and gridding, generates finite element model, optimizes regional area
Mesh shape defines boundary condition and applies load and weld seam and solder joint definition；
S52, model analysis calculate components intrinsic frequency, investigate the kinetic characteristics of the component structural；
S53, the node for inputting the components finite element model and unit information, material and S-N characteristic information, each input channel
Virtual Load spectrum and unitstress value, calculate the fatigue damage value of the components various pieces, the region higher to impairment value according to
Factually border life situations are subject to structure optimization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910595669.2A CN110298125B (en) | 2019-07-03 | 2019-07-03 | Fatigue analysis method based on virtual test field technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910595669.2A CN110298125B (en) | 2019-07-03 | 2019-07-03 | Fatigue analysis method based on virtual test field technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110298125A true CN110298125A (en) | 2019-10-01 |
| CN110298125B CN110298125B (en) | 2020-11-24 |
Family
ID=68030141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910595669.2A Active CN110298125B (en) | 2019-07-03 | 2019-07-03 | Fatigue analysis method based on virtual test field technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110298125B (en) |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110717229A (en) * | 2019-10-16 | 2020-01-21 | 北京航空航天大学 | Virtual load spectrum self-updating construction method based on test data |
| CN110895195A (en) * | 2019-12-31 | 2020-03-20 | 东风汽车集团有限公司 | Method for obtaining durability test load of front lower swing arm rack |
| CN110968965A (en) * | 2019-11-28 | 2020-04-07 | 重庆长安汽车股份有限公司 | Engine cover dynamic fatigue analysis method |
| CN111272438A (en) * | 2019-12-26 | 2020-06-12 | 的卢技术有限公司 | Test system and method for finished automobile road simulation test |
| CN111651836A (en) * | 2020-05-31 | 2020-09-11 | 重庆长安汽车股份有限公司 | Method and storage medium for checking tire model accuracy based on virtual tire test stand |
| CN112241568A (en) * | 2020-09-24 | 2021-01-19 | 北京新能源汽车技术创新中心有限公司 | Engine cover opening and closing endurance fatigue analysis method based on finite elements |
| CN112419072A (en) * | 2020-10-30 | 2021-02-26 | 中汽研（天津）汽车工程研究院有限公司 | Automobile insurance anti-leakage calculation method based on automobile physical attributes |
| CN112685831A (en) * | 2020-12-25 | 2021-04-20 | 华南理工大学 | Optimization method for suspension and auxiliary frame part structures |
| CN112861405A (en) * | 2021-02-02 | 2021-05-28 | 重庆隆鑫通航发动机制造有限公司 | CAE (computer aided engineering) analysis method for motorcycle strength based on virtual pavement and explicit transient dynamics |
| CN113010964A (en) * | 2021-03-16 | 2021-06-22 | 慧勒智行汽车技术(昆山)有限公司 | Vehicle bench test load spectrum analysis method based on virtual test field |
| CN113029584A (en) * | 2019-12-24 | 2021-06-25 | 上汽通用汽车有限公司 | Method for obtaining standard load spectrum of finished automobile test |
| CN114048553A (en) * | 2022-01-13 | 2022-02-15 | 岚图汽车科技有限公司 | VPG load-based part durability DV test method, device and equipment |
| CN114139284A (en) * | 2021-12-06 | 2022-03-04 | 西南石油大学 | ADAMS-based vehicle load extraction method |
| CN114624038A (en) * | 2022-03-02 | 2022-06-14 | 中车青岛四方机车车辆股份有限公司 | Method and device for processing vibration load of wire bracket and railway vehicle |
| CN114741887A (en) * | 2022-04-19 | 2022-07-12 | 一汽解放汽车有限公司 | Bumper durability analysis method, bumper durability analysis device, computer device, and storage medium |
| CN114970237A (en) * | 2022-04-21 | 2022-08-30 | 中国第一汽车股份有限公司 | Method for improving fatigue endurance simulation precision of stabilizer bar system |
| CN115310337A (en) * | 2022-10-12 | 2022-11-08 | 中汽研（天津）汽车工程研究院有限公司 | Vehicle dynamic performance prediction method based on artificial intelligence |
| CN115525993A (en) * | 2022-09-05 | 2022-12-27 | 中交第三航务工程局有限公司 | Method for calculating structural strength of foundation stay bar of four-upright floating type fan |
| CN116502343A (en) * | 2023-06-29 | 2023-07-28 | 江铃汽车股份有限公司 | Automobile suspension optimal design method, system, storage medium and equipment |
| CN116502342A (en) * | 2023-06-28 | 2023-07-28 | 江铃汽车股份有限公司 | Virtual simulation-based automobile engine hood fatigue endurance life prediction method and system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101393079A (en) * | 2008-11-06 | 2009-03-25 | 上海交通大学 | Automobile vehicle body structure fatigue life predicting system |
| CN102968516A (en) * | 2012-04-25 | 2013-03-13 | 南京浦镇海泰制动设备有限公司 | Method for analyzing fatigue strength of brake control device on basis of finite element |
| US20130316188A1 (en) * | 2012-05-25 | 2013-11-28 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Sliding member and production method for same |
| CN104679930A (en) * | 2013-12-03 | 2015-06-03 | 迪艾工程技术软件（上海）有限公司 | Automobile road load extracting method and device |
| CN109214078A (en) * | 2018-08-28 | 2019-01-15 | 华南理工大学 | A kind of knuckle analysis of Fatigue-life method |
| CN109426685A (en) * | 2017-08-28 | 2019-03-05 | 长城汽车股份有限公司 | Parts analysis method |
-
2019
- 2019-07-03 CN CN201910595669.2A patent/CN110298125B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101393079A (en) * | 2008-11-06 | 2009-03-25 | 上海交通大学 | Automobile vehicle body structure fatigue life predicting system |
| CN102968516A (en) * | 2012-04-25 | 2013-03-13 | 南京浦镇海泰制动设备有限公司 | Method for analyzing fatigue strength of brake control device on basis of finite element |
| US20130316188A1 (en) * | 2012-05-25 | 2013-11-28 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Sliding member and production method for same |
| CN104679930A (en) * | 2013-12-03 | 2015-06-03 | 迪艾工程技术软件（上海）有限公司 | Automobile road load extracting method and device |
| CN109426685A (en) * | 2017-08-28 | 2019-03-05 | 长城汽车股份有限公司 | Parts analysis method |
| CN109214078A (en) * | 2018-08-28 | 2019-01-15 | 华南理工大学 | A kind of knuckle analysis of Fatigue-life method |
Non-Patent Citations (1)
| Title |
|---|
| 邢如飞 等: ""基于虚拟耐久路面的动态载荷分解方法研究"", 《沈阳航空航天大学学报》 * |
Cited By (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110717229A (en) * | 2019-10-16 | 2020-01-21 | 北京航空航天大学 | Virtual load spectrum self-updating construction method based on test data |
| CN110968965A (en) * | 2019-11-28 | 2020-04-07 | 重庆长安汽车股份有限公司 | Engine cover dynamic fatigue analysis method |
| CN110968965B (en) * | 2019-11-28 | 2022-07-08 | 重庆长安汽车股份有限公司 | Engine cover dynamic fatigue analysis method |
| CN113029584B (en) * | 2019-12-24 | 2022-12-13 | 上汽通用汽车有限公司 | Method for obtaining standard load spectrum of finished automobile test |
| CN113029584A (en) * | 2019-12-24 | 2021-06-25 | 上汽通用汽车有限公司 | Method for obtaining standard load spectrum of finished automobile test |
| CN111272438A (en) * | 2019-12-26 | 2020-06-12 | 的卢技术有限公司 | Test system and method for finished automobile road simulation test |
| CN110895195B (en) * | 2019-12-31 | 2021-04-27 | 东风汽车集团有限公司 | Method for obtaining durability test load of front lower swing arm rack |
| CN110895195A (en) * | 2019-12-31 | 2020-03-20 | 东风汽车集团有限公司 | Method for obtaining durability test load of front lower swing arm rack |
| CN111651836A (en) * | 2020-05-31 | 2020-09-11 | 重庆长安汽车股份有限公司 | Method and storage medium for checking tire model accuracy based on virtual tire test stand |
| CN111651836B (en) * | 2020-05-31 | 2021-08-06 | 重庆长安汽车股份有限公司 | Method and storage medium for checking tire model accuracy based on virtual tire test stand |
| CN112241568A (en) * | 2020-09-24 | 2021-01-19 | 北京新能源汽车技术创新中心有限公司 | Engine cover opening and closing endurance fatigue analysis method based on finite elements |
| CN112419072A (en) * | 2020-10-30 | 2021-02-26 | 中汽研（天津）汽车工程研究院有限公司 | Automobile insurance anti-leakage calculation method based on automobile physical attributes |
| CN112685831A (en) * | 2020-12-25 | 2021-04-20 | 华南理工大学 | Optimization method for suspension and auxiliary frame part structures |
| CN112861405A (en) * | 2021-02-02 | 2021-05-28 | 重庆隆鑫通航发动机制造有限公司 | CAE (computer aided engineering) analysis method for motorcycle strength based on virtual pavement and explicit transient dynamics |
| CN112861405B (en) * | 2021-02-02 | 2023-03-14 | 重庆隆鑫通航发动机制造有限公司 | CAE (computer aided engineering) analysis method for motorcycle strength based on virtual pavement and explicit transient dynamics |
| CN113010964A (en) * | 2021-03-16 | 2021-06-22 | 慧勒智行汽车技术(昆山)有限公司 | Vehicle bench test load spectrum analysis method based on virtual test field |
| CN113010964B (en) * | 2021-03-16 | 2024-04-16 | 慧勒智行汽车技术(昆山)有限公司 | Virtual test field-based vehicle bench test load spectrum analysis method |
| CN114139284A (en) * | 2021-12-06 | 2022-03-04 | 西南石油大学 | ADAMS-based vehicle load extraction method |
| CN114048553A (en) * | 2022-01-13 | 2022-02-15 | 岚图汽车科技有限公司 | VPG load-based part durability DV test method, device and equipment |
| CN114624038A (en) * | 2022-03-02 | 2022-06-14 | 中车青岛四方机车车辆股份有限公司 | Method and device for processing vibration load of wire bracket and railway vehicle |
| CN114624038B (en) * | 2022-03-02 | 2024-04-02 | 中车青岛四方机车车辆股份有限公司 | Method and device for processing vibration load of wire bracket and railway vehicle |
| CN114741887B (en) * | 2022-04-19 | 2024-06-04 | 一汽解放汽车有限公司 | Bumper durability analysis method, apparatus, computer device, and storage medium |
| CN114741887A (en) * | 2022-04-19 | 2022-07-12 | 一汽解放汽车有限公司 | Bumper durability analysis method, bumper durability analysis device, computer device, and storage medium |
| CN114970237A (en) * | 2022-04-21 | 2022-08-30 | 中国第一汽车股份有限公司 | Method for improving fatigue endurance simulation precision of stabilizer bar system |
| CN115525993B (en) * | 2022-09-05 | 2024-02-02 | 中交第三航务工程局有限公司 | Calculation method for structural strength of four-column floating type fan foundation stay bar |
| CN115525993A (en) * | 2022-09-05 | 2022-12-27 | 中交第三航务工程局有限公司 | Method for calculating structural strength of foundation stay bar of four-upright floating type fan |
| CN115310337A (en) * | 2022-10-12 | 2022-11-08 | 中汽研（天津）汽车工程研究院有限公司 | Vehicle dynamic performance prediction method based on artificial intelligence |
| CN116502342B (en) * | 2023-06-28 | 2023-09-01 | 江铃汽车股份有限公司 | Virtual simulation-based automobile engine hood fatigue endurance life prediction method and system |
| CN116502342A (en) * | 2023-06-28 | 2023-07-28 | 江铃汽车股份有限公司 | Virtual simulation-based automobile engine hood fatigue endurance life prediction method and system |
| CN116502343B (en) * | 2023-06-29 | 2023-10-31 | 江铃汽车股份有限公司 | Automobile suspension optimal design method, system, storage medium and equipment |
| CN116502343A (en) * | 2023-06-29 | 2023-07-28 | 江铃汽车股份有限公司 | Automobile suspension optimal design method, system, storage medium and equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110298125B (en) | 2020-11-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110298125A (en) | A kind of fatigue analysis method based on virtual test field technology | |
| CN110309598A (en) | A kind of creation method of Virtual Test Field | |
| CN105092261B (en) | Road load method of testing and system | |
| CN111581859B (en) | Ride comfort modeling analysis method and system for suspension coupling nonlinear commercial vehicle | |
| CN101510230A (en) | Vehicle road load emulation method | |
| CN112131672A (en) | Durable load spectrum simulation method, device, storage medium and device | |
| CN110414052A (en) | A kind of vehicle structure fatigue life calculation method composed based on digital sample car and virtual road | |
| CN110119577A (en) | A method of extracting pure electric vehicle truck batteries bag bracket structure load spectrum | |
| CN111444623B (en) | Collaborative optimization method and system for damping nonlinear commercial vehicle suspension dynamics | |
| CN104175920A (en) | Design method for optimal control current of vehicle seat suspension magnetorheological damper | |
| CN110059404A (en) | A kind of weld fatigue calculation method | |
| CN112182764A (en) | Vehicle ride comfort test method and device | |
| CN108228994A (en) | The calculation method for stress of vehicle and equipment under cross-country road arbitrary excitation | |
| CN104331556A (en) | Simulated test method based on nonlinear vehicle ride comfort simulation model | |
| WO2024001902A1 (en) | Method and system for calculating maximum stress distribution of parts of vehicle chassis and storage medium | |
| CN104455157A (en) | Obtaining method of car seat suspension hydraulic buffer nonlinear speed characteristic parameter | |
| CN117010077A (en) | Method and device for checking limiting included angle of driving shaft in suspension of vehicle | |
| CN116484502A (en) | Machine-liquid coupling analysis method for interconnected hydro-pneumatic suspension system of heavy vehicle | |
| Rajesh et al. | LCV Chassis Frame Optimization Using Combined Simulation and Experimental Approach | |
| Gao et al. | Programmed load spectrum for fatigue bench test of a vehicle body | |
| Ormándi et al. | Estimating vehicle suspension characteristics for digital twin creation with genetic algorithm | |
| Anderson et al. | Development of a multi-body dynamic model of a tractor-semitrailer for ride quality prediction | |
| KR20090092995A (en) | Dynamic analsys method for bridge using artificial vehicle wheel loads | |
| CN113722814A (en) | Vehicle ride comfort analysis method based on virtual road test | |
| CN111241724B (en) | Fatigue life prediction method for wide-body mining vehicle frame |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Xin Inventor after: Zhu Wei Inventor after: Wang Hongzi Inventor after: Yao Haodong Inventor after: Wang Zhenfeng Inventor after: Jiang Qingwei Inventor after: Yang Jiansen Inventor after: Wang Xinyu Inventor after: Dong Qiangqiang Inventor after: Zhao Zhiqiang Inventor after: Wang Song Inventor after: Wu Zhenjiang Inventor after: He Li Inventor after: Dong Junhong Inventor before: Li Xin Inventor before: Zhu Wei Inventor before: Wang Hongzi Inventor before: Yao Haodong Inventor before: Yang Jiansen Inventor before: Wang Xinyu Inventor before: Dong Qiangqiang Inventor before: Zhao Zhiqiang Inventor before: Wang Song Inventor before: Wu Zhenjiang Inventor before: He Li Inventor before: Dong Junhong |
|
| CB03 | Change of inventor or designer information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |