CN106950101A - Rivet draws and cuts Coupled Dynamic mechanical property test fixture - Google Patents
Rivet draws and cuts Coupled Dynamic mechanical property test fixture Download PDFInfo
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- CN106950101A CN106950101A CN201710155336.9A CN201710155336A CN106950101A CN 106950101 A CN106950101 A CN 106950101A CN 201710155336 A CN201710155336 A CN 201710155336A CN 106950101 A CN106950101 A CN 106950101A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0026—Combination of several types of applied forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
- G01N2203/0423—Chucks, fixtures, jaws, holders or anvils using screws
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- Health & Medical Sciences (AREA)
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- Chemical & Material Sciences (AREA)
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- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
A kind of rivet draws and cuts Coupled Dynamic mechanical property test fixture, including incident bar adapter, incident bar riveting test part, transmission bar riveting test part and transmission bar adapter.The inclined-plane of transmission bar riveting test part abutting end is fitted with the inclined-plane of incident bar riveting test part abutting end, and the transmission bar riveting test part abutting end is connected with incident bar riveting test part abutting end.The abutting end of incident bar adapter loads the bare terminal end of incident bar riveting test part, and the abutting end of transmission bar adapter loads the bare terminal end of transmission bar riveting test part.The bare terminal end of incident bar adapter is connected with incident bar one end, and bare terminal end and transmission bar one end of transmission bar adapter are connected.It is of the invention to be connected from the separate type Hopkinson pull bars in different bar footpaths, realize that Coupled Dynamic mechanical property test is cut in the drawing of the rivet of different load angles.The characteristics of present invention has simple in construction, versatility good, and reusable.
Description
Technical field
The invention belongs to aeronautical dynamics experiment field, it is related to a kind of rivet and draws the examination for cutting Coupled Dynamic mechanical property test
Fixture is tested, specifically a kind of riveting test part and its method of clamping based on separate type Hopkinson pull bars.
Background technology
Rivet is the critical piece of aircaft configuration connection, generally, often there is 150 ten thousand to 200 ten thousand on a frame large aircraft
Rivet and bolt.Because aircraft is continued to develop to high speed, maximization direction, working environment is more and more severe, mechanism
Carrying increase, stress state is complicated.Aircraft under arms during can (bird be hit, hail, rubble, engine by plurality of discrete source
Fragment etc.) hit caused by shock loading effect.Now, the destructions of many aircaft configurations all occurs be made up of riveting
On joint detail.And under these dynamic loads, the failure mode of rivet and static failure mode have significant difference.
The experiment of rivet dynamic mechanical is the effective means for studying its dynamic failure mode, the method generally used at present
It is that riveting parts are loaded using impact pendulnm or high-speed hydraulic servo testing machine.Liu little Chuan etc. is in Application No.
A kind of rivet dynamic tensile, shearing mechanical property are proposed in 201420339789.9 and 201420339790.1 patent respectively
Device is supported in experiment, and its test principle is：Respectively by the way that stud will be stretched with being connected test block, shearing riveting test part and hydraulic pressure are watched
The bar that is vertically connected with for taking testing machine is connected.Apply pure extension to riveting test part using the motion of connecting rod to carry with pure shear
Lotus, finally makes riveting test part damage inactivation.The invention, which is disadvantageous in that, is only capable of the pure extension for realizing rivet and pure shear
Dynamic mechanical is tested, and the stress of aircaft configuration is extremely complex in reality, and simple stretching, shearing test can not
Reflect the mechanical property of rivet under truth.In addition, experiment can not separate the inertia effect with the physical property of research object
Come, influence experimental result, thus the maximum load speed that can be reached is no more than 10m/s.
R.Porcaro et al. probe into rivet draw cut Interaction Mechanics performance when, devised in pertinent literature a kind of locking
The riveting test part clamping device of disk.Its test principle is：The special folder for being designed riveting test part with it by fastening bolt
Tool is connected, and after the completion of the fixture fixed is coordinated with lock collar assembling, is connected by stretching rod with hydraulic servo experimental machine.
Because lock collar has circular hole on the direction of different angles, thus it is possible to vary position of the stretching rod in lock collar is so as to realize different angles
Rivet draw cut Coupled Dynamic mechanical property test.Interaction Mechanics performance test is cut in the drawing that although program realizes rivet, but
The load test of rivet need to be realized by the test fixture of design specialized, its sample type and corresponding clamping device are only applicable
In targetedly test platform.Furthermore, because experimental rig is extremely complex, with the increase of loading speed, its inertia effect will
Significantly increase, have a strong impact on result of the test.Thus the device can only be tested under quasistatic.
In order to improve the loading velocity of rivet dynamic compression properties, R.Porcaro et al. in pertinent literature again with
Split Hopkinson Bar is test platform, devises test battery device.Its test principle is：Entered by projectile impact
Rod end surface is penetrated, and then is moved by the movement progress grip block of incident bar., will using the special tectonic of riveting test part
The compression conversion of motion of Hopkinson bars is the stretching of riveting test part, shearing motion, so as to realize the pure extension of rivet and pure
Shear mechanical property test.Although the loading speed of experiment has been brought up to 20m/s by this method, a diameter of due to using
60mm fiber-glass pole, stress wave dispersion effect is extremely serious, influences larger to result of the test, and test fixture is complicated, and manufacture is not
Easily.Other this method still can not realize that the rivet in the case of High speed load is drawn and cut Coupled Dynamic mechanical property test.
The content of the invention
For overcome present in prior art on result of the test influence it is larger, the riveting in the case of High speed load can not be realized
Nail draws the deficiency for cutting Coupled Dynamic mechanical property test, and the present invention proposes a kind of rivet drawing and cuts Coupled Dynamic mechanical property test
Fixture.
The present invention includes incident bar adapter, incident bar riveting test part, transmission bar riveting test part and transmission bar switching
Head.Wherein：Paste on the inclined-plane on the inclined-plane of the transmission bar riveting test part abutting end and the incident bar riveting test part abutting end
Close, and the transmission bar riveting test part abutting end is connected with incident bar riveting test part abutting end by rivet.The incidence
The abutting end of bar adapter loads the bare terminal end of the incident bar riveting test part, and the abutting end of the transmission bar adapter loads
The bare terminal end of the transmission bar riveting test part.The whorl brace rod of the bare terminal end of incident bar adapter is screwed in incident rod end surface
In the screwed hole of the heart, in the screwed hole that the whorl brace rod of the bare terminal end of transmission bar adapter is screwed in transmission bar end face center,
The experimental rig assembled is connected with separate type Hopkinson pull bars, realizes that Coupled Dynamic mechanical property is cut in the drawing of rivet
Experiment.
And by the plane of the incident bar adapter outer surface and the incident bar riveting test part bare terminal end " u "-shaped opening
Inner surface is bonded.By the plane of the transmission bar adapter outer surface and the transmission bar riveting test part bare terminal end " u "-shaped opening
Inner surface bonding
The incident bar riveting test part is the bulk of cross section ellipse.One end of the incident bar riveting test part is
Bare terminal end, the other end is abutting end.The bare terminal end of the incident bar riveting test part has along the incident bar riveting test part length
The " u "-shaped opening of direction extension.The inner face of the incident bar riveting test part abutting end and outer face are between vertical plane
There is the inclined-plane that angle is θ °, and the inclined direction on the inclined-plane is consistent with the direction of the " u "-shaped opening.Geometry on inclined-plane
There is the rivet hole of insertion at center；The central axis of the rivet hole is in the surface on the inclined-plane.
The transmission bar riveting test part and the incident bar riveting test part structure proximate；The transmission bar riveting test
The inner face of part abutting end and outer face are the inclined-plane for having θ ° of angle between vertical plane, and transmission bar riveting test part
The bevel angle on inclined-plane and incident bar riveting test part is complementary.
θ=15~75 °
The circumferential surface of the incident bar adapter symmetrically be processed into plane, and make the incident bar adapter after processing
Width is identical with the width of the " u "-shaped opening on the incident bar riveting test part, and makes gap cooperation therebetween.The incidence
One end of bar adapter is bare terminal end, and the other end is abutting end.The geometric center of the incident bar adapter bare terminal end end face has
Axially projecting whorl brace rod, the end face of the incident bar adapter abutting end is inner with the incident bar riveting test part
The inclined-plane that face coordinates, and the angle on the abutting end inclined-plane is identical with the angle on incident bar riveting test part abutting end inclined-plane.
The structure of the transmission bar adapter is identical with incident bar adapter with shape.Transmission bar adapter abutting end is
With the transmission bar riveting test part inner face coordinate inclined-plane, and the transmission bar adapter abutting end inclined-plane angle with entering
The angle for penetrating bar riveting test part abutting end inclined-plane is identical.
The material of the incident bar adapter and transmission bar adapter is identical with the Hopkinson bar materials that experiment coordinates.
The present invention is drawn there is provided a kind of rivet based on separate type Hopkinson tie systems and cuts Coupled Dynamic mechanical property
The experimental rig that can be tested, can realize that different size rivet draws the dynamic mechanical experiment for cutting coupling.
In the present invention, incident bar riveting test part and transmission bar riveting test part pass through riveted holes and rivet element riveting respectively
Connect, and be connected respectively with incident bar adapter and transmission bar adapter by gluing mode.Incident bar after connecting turns
Joint and transmission bar adapter are then connected with incident bar and transmission bar respectively by screw thread.
The incident bar riveting test part is consistent with shape with transmission bar riveting test part structure, and the two is symmetrically back to laminating
Design.
The beneficial effects are mainly as follows the following aspects：First, it can preferably realize that the drawing of rivet is cut
Coupled Dynamic mechanical property test, and it is easy for installation, highly reliable；Second, the present apparatus has preferable versatility, can pass through
The hole to be riveted matched with rivet element specification is processed on riveting test part so that the device is applied to the rivet of multiple trades mark
Coupled Dynamic mechanical property test is cut in drawing；3rd, it is easy to carry out the development of riveting process, and this experimental rig is reusable,
Improve test efficiency；4th, it is real by way of additional lock collar in the literature that the present invention is directed to R.Porcaro et al. in principle
Existing rivet draws the testpieces caused by cutting coupling test excessively complicated, leads to not the weak point for improving loading speed, separately wards off
Path, is designed to riveting test part profile, by the riveting test part of different angles, can realize different load angles
Rivet draws and cuts Coupled Dynamic mechanical property test；5th, because the present invention uses separate type Hopkinson tie systems for measurement
Instrument, successfully decouples effects of stress wave and strain rate effect, so as to which loading speed is improved to 20m/s, and nothing of the present invention
Big change need to be carried out to Hopkinson tie systems, can preferably coordinate the Hopkinson bars in different bar footpaths to carry out rivet
Coupled Dynamic mechanical property test is cut in drawing.
Brief description of the drawings
Fig. 1 is adapter part schematic diagram of the present invention；
Fig. 2 is riveting test part part schematic diagram of the present invention；
Fig. 3 is experimental rig assembling schematic diagram of the present invention
Fig. 4 is experimental rig force analysis figure of the present invention
Fig. 5 is that Coupled Dynamic mechanical property test experimental rig assembling figure is cut in rivet of the present invention drawing；
Fig. 6 is that Coupled Dynamic mechanical property test experimental rig exploded view is cut in rivet of the present invention drawing.
In figure, 1. incident bar adapters；2. incident bar riveting test part；3. transmission bar riveting test part；4. transmission bar turns
Joint；5. rivet；6. incident bar；7 transmission bars.
Embodiment
This example is that a kind of rivet draws the fixture for cutting Coupled Dynamic mechanical property test, including incident bar adapter 1, incident
Bar riveting test part 2, transmission bar riveting test part 3 and transmission bar adapter 4.Wherein, incident bar adapter 1 and transmission bar switching
First 4 material is identical with the Hopkinson bar materials that experiment coordinates.
The incident bar riveting test part 2 is the bulk of cross section ellipse.One end of the incident bar riveting test part
For bare terminal end, the other end is abutting end.The bare terminal end of the incident bar riveting test part has long along the incident bar riveting test part
The groove of direction extension is spent, " u "-shaped opening is formd in the bare terminal end of the incident bar riveting test part.The incident bar riveting test
The inner face of part abutting end and outer face are inclined-plane, and the angle theta of the inclined-plane and vertical plane is 15~70 °, and the inclined-plane
Inclined direction is consistent with the direction of the " u "-shaped opening.Geometric center on inclined-plane has the rivet hole of insertion；The rivet hole
Central axis in the surface on the inclined-plane.In the present embodiment, the angle theta is 40 °.
The transmission bar riveting test part 3 and the structure proximate of incident bar riveting test part 2, the transmission bar riveting examination
The angle theta tested between the inner face inclined-plane and outer face inclined-plane and vertical plane of the abutting end of part 3 is also 15~70 °.Difference exists
In the inclined-plane of the transmission bar riveting test part is complementary with the bevel angle of incident bar riveting test part.In the present embodiment, the folder
Angle θ is 40 °.
The incident bar adapter 1 is obtained using pole material by Milling Process.The circumference table of the incident bar adapter
Face symmetrically be processed into plane, and make the width of the incident bar adapter after processing with the incident bar riveting test part 2
The width of " u "-shaped opening is identical, and makes gap cooperation therebetween.One end of the incident bar adapter is bare terminal end, the other end
For abutting end.The geometric center for penetrating bar adapter bare terminal end end face has axially projecting whorl brace rod, and the bar of penetrating turns
The end face of joint abutting end is the inclined-plane coordinated with the incident bar riveting test part inner face, and the angle on the abutting end inclined-plane
Degree is identical with the angle on incident bar riveting test part abutting end inclined-plane.
The structure of the transmission bar adapter 4 is similar to the structure of incident bar adapter 1, and difference is described
The inclined-plane for penetrating the end face of bar adapter abutting end with the inner face of transmission bar riveting test part 3 to coordinate, and the transmission bar
The angle on adapter abutting end inclined-plane is identical with the angle on incident bar riveting test part abutting end inclined-plane.
During assembling, the inclined-plane of the abutting end of transmission bar riveting test part 3 and the abutting end of incident bar riveting test part 2
Inclined-plane laminating, and the transmission bar riveting test part abutting end is consolidated with the abutting end of incident bar riveting test part 2 by rivet 5
Even.
The abutting end of incident bar adapter loads to the bare terminal end of the incident bar riveting test part 2, and by the incident bar
The plane of the outer surface of adapter 1 is Nian Jie with the inner surface of the incident bar riveting test part bare terminal end " u "-shaped opening.By transmission bar
The abutting end of adapter loads the bare terminal end of the transmission bar riveting test part 3, and putting down the outer surface of transmission bar adapter 4
Face is Nian Jie with the inner surface of the transmission bar riveting test part bare terminal end " u "-shaped opening.
, will be saturating in the screwed hole that the whorl brace rod of the bare terminal end of incident bar adapter 1 is screwed in the end face center of incident bar 6
The whorl brace rod for penetrating the bare terminal end of bar adapter 4 is screwed in the screwed hole of the end face center of transmission bar 7, and the experiment assembled is filled
Put and be connected with separate type Hopkinson pull bars, realize that Coupled Dynamic mechanical property test is cut in the drawing of rivet.
Claims (8)
1. a kind of rivet draws and cuts Coupled Dynamic mechanical property test fixture, it is characterised in that including incident bar adapter, incident bar
Riveting test part, transmission bar riveting test part and transmission bar adapter；Wherein：The transmission bar riveting test part abutting end it is oblique
Face is fitted with the inclined-plane of the incident bar riveting test part abutting end, and by rivet by the transmission bar riveting test part abutting end
It is connected with incident bar riveting test part abutting end；The abutting end of the incident bar adapter loads the incident bar riveting test part
Bare terminal end, the abutting end of the transmission bar adapter loads the bare terminal end of the transmission bar riveting test part；Incident bar is transferred
The whorl brace rod of the bare terminal end of head is screwed in the screwed hole of incident bar end face center, by the spiral shell of the bare terminal end of transmission bar adapter
Line connecting rod is screwed in the screwed hole of transmission bar end face center, by the experimental rig assembled and separate type Hopkinson pull bars
It is connected, realizes that Coupled Dynamic mechanical property test is cut in the drawing of rivet.
2. rivet as claimed in claim 1 draws and cuts Coupled Dynamic mechanical property test fixture, it is characterised in that and by the incident bar
The plane of adapter outer surface is Nian Jie with the inner surface of the incident bar riveting test part bare terminal end " u "-shaped opening；This is transmitted
The plane of bar adapter outer surface is Nian Jie with the inner surface of the transmission bar riveting test part bare terminal end " u "-shaped opening.
3. rivet as claimed in claim 1 draws and cuts Coupled Dynamic mechanical property test fixture, it is characterised in that the incident bar riveting
Connect bulk of the testpieces for cross section ellipse；One end of the incident bar riveting test part is bare terminal end, and the other end is cooperation
End；The bare terminal end of the incident bar riveting test part has the " u "-shaped opening extended along the incident bar riveting test part length direction；
There is the inclined-plane that angle is θ ° the inner face of the incident bar riveting test part abutting end and outer face between vertical plane, and
The inclined direction on the inclined-plane is consistent with the direction of the " u "-shaped opening；Geometric center on inclined-plane has the rivet hole of insertion；Institute
State surface of the central axis in the inclined-plane of rivet hole.
4. rivet as claimed in claim 1 draws and cuts Coupled Dynamic mechanical property test fixture, it is characterised in that the transmission bar riveting
Connect testpieces and the incident bar riveting test part structure proximate；The inner face of the transmission bar riveting test part abutting end and outer
End face is the inclined-plane for having θ ° of angle between vertical plane, and the inclined-plane and incident bar riveting test of transmission bar riveting test part
The bevel angle of part is complementary.
5. rivet draws and cuts Coupled Dynamic mechanical property test fixture as claimed in claims 3 and 4, it is characterised in that and described θ=
15~75 °.
6. rivet as claimed in claim 1 draws and cuts Coupled Dynamic mechanical property test fixture, it is characterised in that the incident bar turns
The circumferential surface of joint symmetrically be processed into plane, and rivet the width of the incident bar adapter after processing and the incident bar
The width of " u "-shaped opening on testpieces is identical, and makes gap cooperation therebetween；One end of the incident bar adapter is clamping
End, the other end is abutting end；The geometric center of the incident bar adapter bare terminal end end face has axially projecting whorl brace rod,
The end face of the incident bar adapter abutting end is the inclined-plane coordinated with the incident bar riveting test part inner face, and this is matched somebody with somebody
The angle for closing end inclined-plane is identical with the angle on incident bar riveting test part abutting end inclined-plane.
7. rivet as claimed in claim 1 draws and cuts Coupled Dynamic mechanical property test fixture, it is characterised in that the transmission bar turns
The structure of joint is identical with incident bar adapter with shape；Transmission bar adapter abutting end be and the transmission bar riveting test
The inclined-plane that part inner face coordinates, and the angle and incident bar riveting test part abutting end on the transmission bar adapter abutting end inclined-plane
The angle on inclined-plane is identical.
8. rivet as claimed in claim 1 draws and cuts Coupled Dynamic mechanical property test fixture, it is characterised in that the incident bar turns
The material of joint and transmission bar adapter is identical with the Hopkinson bar materials that experiment coordinates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710155336.9A CN106950101B (en) | 2017-03-16 | 2017-03-16 | Coupled Dynamic mechanical property test fixture is cut in rivet drawing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710155336.9A CN106950101B (en) | 2017-03-16 | 2017-03-16 | Coupled Dynamic mechanical property test fixture is cut in rivet drawing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106950101A true CN106950101A (en) | 2017-07-14 |
| CN106950101B CN106950101B (en) | 2019-05-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710155336.9A Active CN106950101B (en) | 2017-03-16 | 2017-03-16 | Coupled Dynamic mechanical property test fixture is cut in rivet drawing |
Country Status (1)
| Country | Link |
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| CN (1) | CN106950101B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107884271A (en) * | 2017-11-15 | 2018-04-06 | 河南理工大学 | Drawing converter and punching drawing test method are rushed in rock dynamic direct tensile test |
| CN107907418A (en) * | 2017-12-11 | 2018-04-13 | 中国建材检验认证集团江苏有限公司 | A kind of experimental rig of crab-bolt tension shearing strength |
| CN108956333A (en) * | 2018-08-08 | 2018-12-07 | 西南交通大学 | Dynamic draws and cuts load testing machine and dynamic tensile shear testing system |
| CN109187229A (en) * | 2018-10-31 | 2019-01-11 | 华北理工大学 | Peg tensile shear testing device and test method |
| CN111307567A (en) * | 2020-03-04 | 2020-06-19 | 四川大学 | Testing assembly and testing method for dynamic tension-shear mechanical parameters of brittle material |
| CN111999172A (en) * | 2020-08-31 | 2020-11-27 | 中国商用飞机有限责任公司 | Test fixture, device and method for rivet composite loading test |
| CN118168962A (en) * | 2024-05-14 | 2024-06-11 | 四川大学 | Single-pulse experimental device and experimental method based on Hopkinson pressure bar |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107884271A (en) * | 2017-11-15 | 2018-04-06 | 河南理工大学 | Drawing converter and punching drawing test method are rushed in rock dynamic direct tensile test |
| CN107884271B (en) * | 2017-11-15 | 2023-09-12 | 河南理工大学 | Impact-pulling converter for rock dynamic direct tensile test and impact-pulling test method |
| CN107907418A (en) * | 2017-12-11 | 2018-04-13 | 中国建材检验认证集团江苏有限公司 | A kind of experimental rig of crab-bolt tension shearing strength |
| CN108956333A (en) * | 2018-08-08 | 2018-12-07 | 西南交通大学 | Dynamic draws and cuts load testing machine and dynamic tensile shear testing system |
| CN109187229A (en) * | 2018-10-31 | 2019-01-11 | 华北理工大学 | Peg tensile shear testing device and test method |
| CN111307567A (en) * | 2020-03-04 | 2020-06-19 | 四川大学 | Testing assembly and testing method for dynamic tension-shear mechanical parameters of brittle material |
| CN111999172A (en) * | 2020-08-31 | 2020-11-27 | 中国商用飞机有限责任公司 | Test fixture, device and method for rivet composite loading test |
| CN111999172B (en) * | 2020-08-31 | 2021-10-26 | 中国商用飞机有限责任公司 | Test fixture, device and method for rivet composite loading test |
| CN118168962A (en) * | 2024-05-14 | 2024-06-11 | 四川大学 | Single-pulse experimental device and experimental method based on Hopkinson pressure bar |
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| CN106950101B (en) | 2019-05-10 |
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