CN1896713A - Method for testing composite damper - Google Patents
Method for testing composite damper Download PDFInfo
- Publication number
- CN1896713A CN1896713A CN 200510084073 CN200510084073A CN1896713A CN 1896713 A CN1896713 A CN 1896713A CN 200510084073 CN200510084073 CN 200510084073 CN 200510084073 A CN200510084073 A CN 200510084073A CN 1896713 A CN1896713 A CN 1896713A
- Authority
- CN
- China
- Prior art keywords
- pole
- center
- composite damper
- holder
- composite
- 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.)
- Pending
Links
Images
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention is about the testing method of a combined damper which simulates the using state of the combined damper by a testing device. It gets the transmission ratio and the frequency of the experiment process, the phase margin in the different vibration frequency and the gravitational acceleration. Then it applies the data into the deduced mathematic formula to compute the needed spring coefficient and the damping coefficient, so it can provides the reference of selecting the proper combined damper to the production or using manufacturer.
Description
Technical field
The present invention is a kind of method of testing of composite damper, especially refers to a kind of actual user mode of simulating, and then obtains the best test result.
Background technology
Shown in Figure 1A and Figure 1B, stereographic map and sectional view for a kind of new-type composite damper 1 (Hybrid Damper), the sealing material at its top 11 is soft silica gel (or being other resilient material), suitable damping fluid 12 is being filled in inside, the center forms the coating portion 13 of a pin, plant wherein for the board pin of desiring damping or shock-absorbing, it mainly is the incabloc function that applies to automobile-used media player, for example CD player or DVD player etc. prevent bouncing pilotage or take place when the situation of machine.Yet because the amount of the inner damping fluid of dosing or matter are not simultaneously, can influence its shock-proof effect simultaneously, but the composite damper for this type of there is no the standard set method of testing at present, the general manufacturer mode of normal use then is an actual machine test, by using manufacturer that the composite damper that the supplier provided directly is installed in automobile-used media player, again player is fixed in measurement jig, be installed on again afterwards on the vibration board, utilize vibration board simulation real machine to be installed in suffered various different frequencies on the automobile, the situation of different acceleration of gravity (G value), whether the composite damper that test is provided meets the requirements.Yet this kind mode has following several shortcomings:
1. though actual machine test is not difficult, not only time-consuming bothersome again because setting up of experiment needs the more time when comparatively bothering and testing, and under the situation without screening in advance, all tests numerous composite dampers that numerous manufacturer provided, efficient is unclear yet;
2. with regard to the supplier of composite damper, whether the product that its manufacturing is finished can't very fast judgement meet manufacturer's demand at all, and the product of dozens of different size may be provided, only a kind of checking by manufacturer, and cost of idleness is consuming time again;
3. with regard to the use manufacturer of media player, must just can pick out preferable product through test repeatedly, time-consuming trouble again on the exploitation time-histories to novel machine, can't effectively shorten at every turn.
In view of this, if promptly conceiving, the inventor can provide a kind of suitable method of testing, can correctly obtain suitable parameter, for example ratio of damping C or spring constant K etc., the supplier can tentatively eliminate some defective productss when producing on the one hand, checks and accepts manufacturer on the other hand and also can finish the work of test with the short time according to obtaining more suitable sample, shorten the exploitation time-histories, make product more competitive.Yet when testing, then must understand the actual use situation of this composite damper earlier, generally the movement of this type of automobile-used media player is mainly got up by several spring suspendeds, so the static weight (supporting power) that movement really is applied on the composite damper can be said so very little, do not have even, only when reading video disc fast turn-around or vehicle ', just be subjected under the situation of the different G values of different frequency, this composite damper is just brought into play the effect of its shock-absorbing or shock-absorbing really, therefore the method for testing of being carried out then must can be simulated and meet real machine and use situation, and the data of gained could be the most near actual result.
Summary of the invention
Fundamental purpose of the present invention provides a kind of method of testing of using the composite damper of situation the most near real machine, mainly be to utilize one group of proving installation analog composite formula damper not having the stressed situation of pressurized, under different vibration frequencies and acceleration of gravity, record the transmission frequency of experimentation when under the different quality piece, data such as phasing degree, again according to measured data, bring in the mathematical formulae that prior simulation user mode derived, calculate required referential spring constant and ratio of damping, allow for manufacturer when manufacturing various composite damper, can eliminate some defective productss fast, avoid taking place blindly each product all to be carried out actual machine test as traditional approach, with shortening development time minimizing cost, and help as using manufacturer to select the foundation of suitable composite damper.
Below in conjunction with accompanying drawing and specific embodiment detailed process of the present invention and technology contents are described in further detail.
Description of drawings
Figure 1A is the stereographic map of composite damper;
Figure 1B is the diagrammatic cross-section of composite damper;
Fig. 2 is the perspective exploded view of proving installation of the present invention;
Fig. 3 A～3E is the testing procedure figure of single composite damper of the present invention;
Fig. 4 is inserted in the cardon of doing of composite damper for the pin of the another kind of center-pole of the present invention;
Fig. 5 is the structural representation of the measurement jig of the another kind of test mode of the present invention;
The structural representation of Fig. 6 during for the test of the another kind of test mode of the present invention;
Fig. 6 A the present invention is at the synoptic diagram that carries out the testing procedure that pressurized improved when stressed;
Fig. 7 is the synoptic diagram of the another kind of pressurized of the present invention employed measurement jig when stressed;
Fig. 8 is the synoptic diagram of the embodiment of Fig. 7 at the adjustment pressured state;
The structural representation of Fig. 9 during for the test of the present invention under carrying out pressured state;
Figure 10 is the mathematical model figure of the use form of composite damper of the present invention.Among the figure
1 composite damper, 11 tops
12 damping fluids, 13 coating portions
2 proving installations
21 vibration boards, 22 measurement jigs
221 axle beds, 222 holders
223 center-poles, 224 pins
225 Connection Blocks
23 quicken rule
3 masses
Embodiment
The method of testing of composite damper of the present invention mainly is to comprise two parts:
One, utilize one group of designed proving installation analog composite formula damper of the present invention to use under the kenel at real machine, under different vibration frequencies, record the transmission data such as frequency, phasing degree of experimentation when under the different quality piece, wherein real machine uses kenel to be meant that mainly composite damper does not have the stressed situation of pressurized, but also can provide slight pressurized stressed situation at the more special board of part;
Two, again according to measured data, bring in the mathematical formulae that prior simulation user mode derived, utilize computer program calculate the spring constant (K) and the ratio of damping data such as (C) of reference of palpus.
As shown in Figure 2, structural upright synoptic diagram for proving installation of the present invention, these proving installation 2 main real machine user modes in order to analog composite formula damper, the pacing of going forward side by side get must related data, this proving installation 2 mainly comprises a vibration board 21, measurement jig 22 and quickens rule 23 etc., these vibration board 21 main simulation real machines are installed in suffered different frequency or different acceleration of gravity on the automobile, so this vibration board 21 can produce predetermined vibration frequency and different exciting values.The pin state of contact of this measurement jig 22 analog composite formulas damper and board, this is responsible for holder 222 by the axle bed 221 that is arranged on the measurement jig 22, and this measurement jig 22 is to be fixed in vibration board 21 places during use.This axle bed 221 is provided with two, then being provided with one on it can slightly axially movable center-pole 223, pin in order to the analog media player, 222 of this holders can be locked on the measurement jig 22, in order to the clamping and the fixing position of composite damper, 223 of preceding this center-poles of test contact with the composite damper that is held.This acceleration rule 23 are in order to record the related data in the experimentation, mainly are to stick in center-pole 223 places, and are provided with relevant instrument and cooperate the data such as transfer ratio of palpus to record with it.Use above-mentioned composition member by this, at different use test states integrated member slightly adjusted again, can simulate various user modes record must data, with as the quick foundation of superseded defective products.
At first simulation does not have the test done under the stressed situation of pressurized with regard to single composite damper, when desiring to carry out the test of single composite damper, center-pole 223 other ends on the axle bed 221 of this measurement jig 22 must be installed the less pin of a size 224 (as shown in Figure 2) in conjunction with a connection piece, this pin 224 also can stretch in the coating portion at composite damper center, but does not bring pressure to bear on the composite damper.In order to increase the reliability of test figure,, can on center-pole 223, place suitable mass in addition in the centre position of two axle beds 221.
When carrying out the test of single composite damper, the flow process of its operation is:
A, at first measurement jig 22 is locked in the vibration board 21 on (as Fig. 3 A);
B, composite damper that desire is tested 1 tentatively are fixed on the holder 222 with screw, but this composite damper 1 possess can be by a little mobile state (as Fig. 3 B);
C, adjust the position of this composite damper 1, make the pin 224 of this center-pole 223 of its centrally aligned, and make pin 224 insert the coating portion place of central inner really, with the locking of the screw on the holder 222, guarantee that the composite damper after " to the heart " can not move arbitrarily (as Fig. 3 C) again;
D, holder 222 is locked on the measurement jig 22 really the time, but to guarantee when noting locking that center-pole 223 can not arrive interference, and also will speed up rule 23 and stick on the end face of center-pole 223 other ends, must notice that quickening rule has directivity, (as Fig. 3 D) is careful when pasting;
E, Vibration on Start-up board 21 produce predetermined vibration frequency;
F, record transfer ratio by quickening rule 23, and according to vibration board 21 vibration frequency and phasing degree etc., this is the data information of first kind of mass test back gained;
G, the different mass 3 (as Fig. 3 E) on center-pole 223 of carry in regular turn afterwards repeat the step of E～F again, can obtain the related data behind each mass of load.
In above-mentioned steps, for being inserted in can fully pin one end be held to close by coating portion behind the composite damper, the pin of guaranteeing this center-pole 223 in the step 3 wraps, we can select pin is coated alcohol in advance, smooth and easy when increase inserting, or as shown in Figure 4, mobile holder 222 makes the pin 224 of center-pole 223 insert after the coating portion 13 of composite damper 1 central inner is drawn out again, and this dual mode can guarantee that all coating portion 13 bonds pin 224 1 ends fully.
Comprehensively the above utilizes proving installation of the present invention can get the R=Tr (transfer ratio) of each mass under different vibration frequencies and acceleration of gravity, the f (frequency) and the Φ data such as (phasing degree) of experimentation.
Then the inventor is according to the use kenel of composite damper, our following columns model (as shown in figure 10), and further obtain this K ', K according to the following derivation of equation ", the mathematic parameter of η, C,
K
*＝K′(1+iη)＝K′+iηK′＝K′+iK″＝K
1+iK
2
K
*Be dynamic stiffness; η is a dissipation factor; K '=K
1Real part for dynamic stiffness; K "=K
2Imaginary part for dynamic stiffness
R=Tr is a transfer ratio; Φ is the phasing degree; C is a ratio of damping.
In the experiment test process, we can obtain the f (frequency) of R=Tr (transfer ratio), experimentation and Φ (phasing degree) etc., utilize the mode of numerical analysis can try to achieve K ', K these values ", the value of η, C, after this these parameter substitution cae analysis software can be carried out the analysis mode of system.
As shown in Figure 5, being the synoptic diagram of the measurement jig of another test mode of the present invention, mainly is in the related data that does not have the shock-proof effect of this composite damper other direction of test under the stressed situation of pressurized.When promptly carrying out the test of other direction of coaxial two composite dampers, as shown in the figure, then need two groups of holders 222 in this measurement jig 22, be with direction and be oppositely arranged perpendicular to the center-pole 223 of axle bed 221, in these axial center-pole 223 1 ends then in conjunction with a connecting seat 225, these Connection Block 225 two ends are arranged with the centerline direction of the axial direction system of a pin 224, two pins 224 perpendicular to center-pole 223.
When carrying out transverse uniaxial to the test of two composite dampers, the flow process of its operation is all similar to the aforementioned embodiment, and just mode of operation partly slightly adjusts, and its flow process is:
A, elder generation are locked in test platform on the vibration board.
B, two tested composite dampers tentatively are fixed on two holders with screw, but locking earlier makes it also a little mobile space can be arranged.
C, two pins are adjusted to level, manual fine-tuning is the tested composite damper on the holder wherein, make the pin of its this center-pole of centrally aligned, and make pin insert the coating portion place of central inner really, again the screw on the holder is locked, fix another composite damper afterwards again, can not move arbitrarily to guarantee the composite damper after " to the heart ".
D, two holders 222 are locked on the measurement jig 22, but to notice guaranteeing that center-pole 223 can not interfered when test during locking, and will speed up rule 23 and stick on the end face of the other end of center-pole 223, but please careful (as shown in Figure 6) must notice that quickening rule has directivity to paste the time.
E, Vibration on Start-up board produce predetermined vibration frequency, and test.
Transfer ratio, frequency and the phasing degree of F, test back gained are the data that first germplasm measures examination back gained.
G, the required mass of carry repeats the step of E～F again on center-pole afterwards, can obtain the related data behind each mass of load.
Afterwards again with in the experiment test process, the f (frequency) of resultant R=Tr (transfer ratio), experimentation and Φ (phasing degree) etc. can obtain K ', the K of this composite damper other direction in the previous formula of substitution ", the value of η, C.The test result that cooperates single composite damper axle can offer the more correct reference data of the user or the producer.
Above-mentioned method of testing is mainly analog composite formula damper not to be had under the stressed situation of pressurized fully, the related data of gained, composite damper then is pressured state when not starting shooting but also have partly during actual the use, but the also shock-proof effect of simulation test composite damper under pressurized is stressed of the designed proving installation of the present invention.
When carrying out above-mentioned transverse uniaxial,, the test under the pressured state also can be arranged as long as change one of them step to the test of two composite dampers.As shown in Figure 6A, promptly in step D, earlier one of them holder 222 is locked on the measurement jig 22, adjust the position of another holder 222 again, the distance that makes both is a value, be pressured state, another holder 222 is locked on the measurement jig 22, will speed up rule 23 afterwards again and stick on the end face of the other end of center-pole 223.All the other sequence of steps are all same as the previously described embodiments, can carry out the reference data of a kind of non-axial shock-absorbing or damping by this.
As shown in Figure 7, be the test mode under the axial compression state, in the present embodiment, a pin 224 is all installed with web member in center-pole two ends on the axle bed 221 of this measurement jig 22, fixing composite damper 1 and respectively be provided with a holder 222 in the axial both sides of center-pole 223, during test and make in the pin 224 plant composite dampers 1, the testing process of its operation is:
A, with test platform be locked in the vibration board on.
B, two tested composite dampers tentatively are fixed on two holders with screw, but locking earlier makes it also a little mobile space can be arranged.
C, manual fine-tuning be the tested composite damper on the holder wherein, make the pin of its this center-pole of centrally aligned, and make pin insert the coating portion place of central inner really, again the screw on the holder is locked, fix another composite damper afterwards again, can not move arbitrarily to guarantee the composite damper after " to the heart ".
D, elder generation wherein a holder 222 are fixed on the measurement jig 22 (as shown in Figure 8), again with loose holder 222 to must precompressed position (distance of promptly controlling both is the d value), fix another holder afterwards again, can utilize vernier caliper to measure and control the position of precompressed in this process.
E, a mass 3 is hung center-pole 223 places of hanging in being positioned in the middle of two axle beds 221, on mass 3, stick again and quicken 23 (as shown in Figure 9) of rule.
F, Vibration on Start-up board produce predetermined vibration frequency, and test.
Transfer ratio, frequency and the phasing degree of G, test back gained are the data that first germplasm measures examination back gained.
H, the required different mass of carry and stick again and quicken rule afterwards repeat the step of F～G again, can obtain the related data behind each mass of load.
Afterwards again with in the experiment test process, the f (frequency) of resultant R=Tr (transfer ratio), experimentation and Φ (phasing degree) etc. can obtain K ', the K of this composite damper under pressurized is stressed in the previous formula of substitution ", the value of η, C.Cooperate the result of the pressurized test of the described other direction of leading portion again, both data are integrated, can obtain better correct numerical value.
Comprehensive the above, the method of testing of composite damper of the present invention, be the various states of utilization proving installation analog composite formula damper of the present invention when real machine uses, when for example not having pressurized is stressed or pressurized is stressed situation, under different vibration frequencies, record the related data data under the different quality piece, again according to measured data, bring in the mathematical formulae that prior simulation user mode derived, and these parameter substitution cae analysis softwares are carried out the analysis of system, analog computation go out must the spring constant of reference and ratio of damping etc., thus, each composite damper is after exploitation is finished, all can provide some suitable reference datas after tested, allow production firm as the foundation of eliminating defective products, allow and use manufacturer can select the product that comparatively meets the real machine user mode, to shorten the time-histories of product development.
The above person is preferred embodiment of the present invention only, is not the scope that is used for limiting the embodiment of the invention.Be that all equalizations of being done according to the present patent application claim change and modification, be all claim of the present invention and contain.
Claims (15)
1. the method for testing of a composite damper mainly comprises:
Use under the user mode of a proving installation analog composite formula damper, under different vibration frequencies, record every data at each mass;
According to the data of gained, bring in the mathematical formulae that prior simulation user mode derived, calculate referential spring constant and ratio of damping again.
2. the method for testing of composite damper according to claim 1 is characterized in that: the measured data of performance test device comprise data such as the frequency of transfer ratio and experimentation and phasing degree.
3. the method for testing of composite damper according to claim 1, it is characterized in that: this proving installation comprises:
One vibration board produces predetermined vibration frequency;
One measurement jig, be to be fixed in vibration board place, comprising axle bed and at least one holder, this axle bed is provided with one can slightly axially movable center-pole, this holder is then being fixed tested composite damper, and center-pole is contacted with composite damper;
One quickens rule, is provided with relevant instrument and cooperates with it, and can stick in this center-pole place.
4. the method for testing of composite damper according to claim 3, it is characterized in that: the other end of this center-pole is combined with a pin, and can stretch in the coating portion of composite damper central inner at this holder place.
5. the method for testing of composite damper according to claim 3 is characterized in that: this acceleration rule system sticks in the end of the other end of center-pole.
6. the method for testing of composite damper according to claim 3, it is characterized in that: this axle bed runs through wherein center-pole, and the mass of different quality also can be fixed in the center-pole place that is positioned at two axle bed pars intermedia parts.
7. the method for testing of composite damper according to claim 3 is characterized in that: carrying out not the having under the stressed situation of pressurized of single composite damper, the operating process of its test is:
A. at first measurement jig is locked on the vibration board;
B. desire is tested composite damper tentatively is fixed on the holder with screw, but this composite damper possess can be by a little mobile state;
C. adjust the position of this damper, make the pin of its this center-pole of centrally aligned, and make pin insert the coating portion place of central inner, again the screw on the holder is locked;
D. holder is locked on the measurement jig when certain, and will speed up rule and stick on the end face of the center-pole other end;
E. the Vibration on Start-up board produces predetermined vibration frequency;
F. record transfer ratio by quickening rule, and according to the vibration frequency of vibrating the board gained and phasing degree etc., this is the data of first kind of mass test back gained;
G. the required mass of carry repeats the step of E～F again after on center-pole, can obtain the related data behind each mass of load.
8. the method for testing of composite damper according to claim 3 is characterized in that: in conjunction with a connecting seat, these Connection Block two ends are arranged with pin to an end of this center-pole in addition, and the axial direction system of two pins is perpendicular to the centerline direction of center-pole.
9. the method for testing of composite damper according to claim 3, it is characterized in that: this measurement jig is provided with two groups of holders, fixing a composite damper respectively, this holder lays respectively at the both sides of the Connection Block of this center-pole, and two pins on the Connection Block are inserted respectively in the coating portion of this composite damper central inner.
10. the method for testing of composite damper according to claim 3 is characterized in that: when carrying out transverse uniaxial to the test of two composite dampers, the flow process of its operation is:
A. earlier test platform is locked on the vibration board;
B. two tested composite dampers tentatively are fixed on two holders with screw, but not locking earlier makes it also a little mobile space can be arranged;
C. two pins are adjusted to level, manual fine-tuning is the tested composite damper on the holder wherein, make the pin of its this center-pole of centrally aligned, and make pin insert the coating portion place of central inner, with the locking of the screw on the holder, fix another composite damper afterwards more in the same manner again;
D. two holders are locked on the test platform, and will speed up on the end face of advising the other end that sticks in center-pole;
E. the Vibration on Start-up board is done producing predetermined vibration frequency, and is tested;
F. transfer ratio, frequency and the phasing degree of test back gained are the data that first germplasm measures examination back gained;
G. the required mass of carry repeats the step of E～F again after on center-pole, can obtain the related data behind each mass of load.
11. the method for testing of composite damper according to claim 10, it is characterized in that: if when advancing the test of pressured state, wherein this step D can change into: wherein a holder is fixed in measurement jig earlier, on more loose holder is moved to the precompressed position, the distance of promptly controlling both is a predetermined value, afterwards and will speed up rule and stick on the end face of the other end of center-pole.
12. the method for testing of composite damper according to claim 3 is characterized in that: the two ends of this center-pole are in addition in conjunction with a pin.
13. the method for testing of composite damper according to claim 3, it is characterized in that: this measurement jig is provided with two groups of holders, fixing a composite damper respectively, this holder lays respectively at the axial two ends of this center-pole, and two pins are inserted respectively in the coating portion of this composite damper central inner.
14. the method for testing of composite damper according to claim 3 is characterized in that: this analog composite formula damper test under pressurized is stressed, its operating process is:
A. test platform is locked on the vibration board;
B. two tested composite dampers tentatively are fixed on two holders with screw, but not locking earlier makes it also a little mobile space can be arranged;
C. two pins are adjusted to level, manual fine-tuning is the tested composite damper on the holder wherein, make the pin of its this center-pole of centrally aligned, and make pin insert the coating portion place of central inner, with the locking of the screw on the holder, fix another composite damper with identical side more afterwards again;
D. earlier wherein a holder be fixed in measurement jig, on more loose holder is moved to behind the precompressed position fixing again;
E. a mass is hung to hang and quickened to advise in being positioned at the middle center-pole of two axle beds, on mass, sticking again;
F. the Vibration on Start-up board produces predetermined vibration frequency, and tests;
G. transfer ratio, frequency and the phasing degree of test back gained are the data that first germplasm measures examination back gained;
H. the required different mass of carry and stick again and quicken rule after repeats the step of F～G again, can obtain the related data behind each mass of load.
15. the proving installation that the method for testing of a composite damper is used, it comprises:
One vibration board produces predetermined vibration frequency;
One measurement jig, be to be fixed in vibration board place, comprising an axle bed and at least one holder, this axle bed is provided with one can slightly axially movable center-pole, this holder is then being fixed tested composite damper, and center-pole is contacted with composite damper;
One quickens rule, is provided with relevant instrument and cooperates with it, and stick in this center-pole place, records the data of transfer ratio in the running of vibration board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510084073 CN1896713A (en) | 2005-07-12 | 2005-07-12 | Method for testing composite damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510084073 CN1896713A (en) | 2005-07-12 | 2005-07-12 | Method for testing composite damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1896713A true CN1896713A (en) | 2007-01-17 |
Family
ID=37609279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510084073 Pending CN1896713A (en) | 2005-07-12 | 2005-07-12 | Method for testing composite damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1896713A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112629837A (en) * | 2020-11-03 | 2021-04-09 | 哈尔滨哈飞航空工业有限责任公司 | Rotary damper damping coefficient testing device and measuring method |
-
2005
- 2005-07-12 CN CN 200510084073 patent/CN1896713A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112629837A (en) * | 2020-11-03 | 2021-04-09 | 哈尔滨哈飞航空工业有限责任公司 | Rotary damper damping coefficient testing device and measuring method |
| CN112629837B (en) * | 2020-11-03 | 2023-06-23 | 哈尔滨哈飞航空工业有限责任公司 | Device and method for testing damping coefficient of rotary damper |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6147178B2 (en) | Bearing testing machine | |
| TWI697179B (en) | Torque imparting unit, driving device and tire testing device | |
| CN108489738B (en) | Torsion beam fatigue strength test bed and test method for two-channel simulated road | |
| CN103808499A (en) | Method and device for testing dynamic stiffness of vibration isolator | |
| CN108931382B (en) | Fatigue endurance testing device and method for multi-connecting-rod rear suspension axle housing assembly | |
| CN109115523B (en) | Transverse stabilizer bar calibration test and fatigue endurance test bench and test method | |
| CN105004609A (en) | Composite material car body embedded part strength test fixture | |
| CN202229997U (en) | Variable load cylinder sleeve piston ring friction-wear test device | |
| CN1896713A (en) | Method for testing composite damper | |
| CN209707118U (en) | A kind of vehicle steering wheel vibration test fixing device | |
| CN102384849B (en) | Car seat component dynamic-static equivalent test method | |
| CN201425544Y (en) | Triaxial vibration composite test device | |
| Schudt et al. | Virtual road load data acquisition in practice at general motors | |
| CN108387350A (en) | Vehicle body attachment point dynamic stiffness test method, device and storage medium | |
| CN111678711A (en) | Accelerator pedal test tool and test method | |
| Podworna | Dynamics of a bridge beam under a stream of moving elements. Part 1—modelling and numerical integration | |
| CN206399640U (en) | A kind of automobile rubber bush fatigue experimental device | |
| TWI239388B (en) | Method for testing hybrid damper | |
| CN114441285A (en) | Power test device and method for simulating train load | |
| CN112414879B (en) | Spacecraft locking mechanism vibration friction wear performance test device and method | |
| JP2004512523A (en) | testing machine | |
| CN104280230A (en) | Torsion test device and method for air spring | |
| TWM368527U (en) | Platform assembly | |
| CN210173371U (en) | Frequency test fixture for automobile half-shaft vibration absorber | |
| Ogunoiki et al. | Characterisation of the effects of vehicle parameter variations on vehicle road load data |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |