CN201876396U - Measuring device of static normal direction contact stiffness of junction plane - Google Patents

Measuring device of static normal direction contact stiffness of junction plane Download PDF

Info

Publication number
CN201876396U
CN201876396U CN2010206399652U CN201020639965U CN201876396U CN 201876396 U CN201876396 U CN 201876396U CN 2010206399652 U CN2010206399652 U CN 2010206399652U CN 201020639965 U CN201020639965 U CN 201020639965U CN 201876396 U CN201876396 U CN 201876396U
Authority
CN
China
Prior art keywords
test specimen
measurement mechanism
faying face
pressure transducer
set collar
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.)
Expired - Lifetime
Application number
CN2010206399652U
Other languages
Chinese (zh)
Inventor
张进华
洪军
李小虎
王崴
杨国庆
庄艳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xian Jiaotong University
Original Assignee
Xian Jiaotong University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Xian Jiaotong University filed Critical Xian Jiaotong University
Priority to CN2010206399652U priority Critical patent/CN201876396U/en
Application granted granted Critical
Publication of CN201876396U publication Critical patent/CN201876396U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Landscapes

  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

本实用新型公开了一种适用于结合面静态法向接触刚度的测量装置,该测量装置包括:测量支架、加载装置、测量装置、调节装置及待测试件;所述加载装置固定放置在测试支架的底部,其正上方依次是测量装置、待测试件及调节装置,加载装置、测量装置、待测试件及调节装置均位于测量支架内。本实用新型的测量装置结构简单,当加载不同的正压力时,本实用新型的测量装置能够针对不同的接触表面形貌、不同的正压力、不同的试验件材料特性等参数对结合面静态法向接触刚度进行测量,并利用实验结果分析接触表面形貌、正压力及试验件材料对法向接触刚度的影响规律。

Figure 201020639965

The utility model discloses a measuring device suitable for the static normal contact stiffness of a joint surface. The measuring device comprises: a measuring bracket, a loading device, a measuring device, an adjusting device and a piece to be tested; the loading device is fixedly placed on the testing bracket The bottom of the bottom, directly above it is the measuring device, the piece to be tested and the adjusting device in sequence, and the loading device, the measuring device, the piece to be tested and the adjusting device are all located in the measuring bracket. The measuring device of the utility model has a simple structure. When loading different positive pressures, the measuring device of the utility model can compare the joint surface static method with respect to parameters such as different contact surface topography, different positive pressures, and different test piece material properties. The contact stiffness in the normal direction is measured, and the influence law of the contact surface morphology, normal pressure and test piece material on the normal contact stiffness is analyzed by using the experimental results.

Figure 201020639965

Description

A kind of faying face static method is to the contact stiffness measurement mechanism
Technical field:
The utility model belongs to fields of measurement, relates to a kind of normal direction contact stiffness measurement mechanism, and especially a kind of faying face static method is to the contact stiffness measurement mechanism.
Background technology:
Have a large amount of faying faces in complex mechanical systems such as lathe, large aircraft, they have destroyed the continuity of mechanical system structure, influence the complete machine performance of mechanical system dramatically.The connection performance of faying face presents noncontinuity, and faying face characterisitic parameter model drawing-in system complete machine modeling process can be improved the complete machine performance prediction ability in product design stage effectively.Therefore, accurately making up faying face characterisitic parameter model will provide fundamental basis for complicated machinery parts faying face optimal design.
The faying face contact stiffness is as one of faying face key property parameter, and its order of accuarcy will directly influence faying face parameter characteristic model.Therefore the contact stiffness of faying face is relevant with the surface topography and the contact condition of two surface in contacts, studies the pattern of faying face and contact condition influencing rule and will help accurately to determine faying face characterisitic parameter model the faying face contact stiffness.
The utility model content:
The purpose of this utility model provides a kind of static method to the contact stiffness measurement mechanism, and load and displacement by between direct measurement faying face obtain rigidity then.
The utility model is achieved through the following technical solutions, a kind of measurement mechanism that is applicable to the faying face static method to contact stiffness, and this measurement mechanism comprises: measurement bracket, charger, measurement mechanism, regulating device and test specimen to be measured; Described charger fixed placement is measurement mechanism, test specimen to be measured and regulating device directly over it in the bottom of test bracket successively, and charger, measurement mechanism, test specimen to be measured and regulating device all are positioned at measurement bracket.
Described measurement mechanism comprises a pressure transducer, sensor top cap, pressure transducer set collar and an axial extensometer; Pressure transducer be fixed on lifting jack directly over, pressure transducer top cap sleeve is on the measurement top of pressure transducer, the pressure transducer set collar is fixed on the lower supporting plate, pressure transducer and top cap are played fixing and guide effect, and axially extensometer two blades in measuring process are clamped in respectively on two test specimens to be measured.
Described regulating device comprises adjusts screw rod, screw rod guide pin bushing, hollow orienting sleeve, first lock-screw, second lock-screw, spherical ball, test specimen set collar, steel ball set collar; Wherein, the band handle the adjustment screw rod be positioned at measurement bracket directly over, screw rod guide pin bushing and upper backup pad immovable fitting connect with the adjustment screw flight, and the hollow orienting sleeve is fixed on the upper backup pad, the test specimen set collar is arranged in the hollow orienting sleeve, be positioned at test specimen to be measured directly over, first lock-screw and second lock-screw are arranged in the tapped through hole on the hollow orienting sleeve, can screw in back-out, spherical ball is enclosed in the test specimen set collar by the steel ball set collar, can rotate freely in the test specimen set collar.
Described test specimen to be measured comprises test specimen and following test specimen, following test specimen be positioned at pressure transducer top cap directly over, last test specimen be positioned at following test specimen directly over, there is ball-and-socket on the top of last test specimen, it directly over the ball-and-socket spherical ball, cooperate the local contact of faying face when preventing to load by bulb-ball-and-socket, guarantee that entire joint face contacts fully, near the faying face axially extensometer be fixed on test specimen by the clamping blade and down on the test specimen.
Described measurement bracket comprises upper backup pad, first column and is second column and lower supporting plate that the three is assembled into one, remains to maintain static in measuring process.
Described charger comprises a lifting jack, and lifting jack is fixed in the lower supporting plate.
Principle of the present utility model is by load and distortion between direct measurement faying face, obtains rigidity then, so the fairly simple measurement mechanism of principle is simple in structure.When loading different normal pressures, measurement mechanism of the present utility model can be measured to contact stiffness the faying face static method, and utilize interpretation surface in contact pattern, normal pressure and the testpieces material rule that influences to the normal direction contact stiffness at different surface in contact patterns, different normal pressures, different parameters such as testpieces material behavior.
Description of drawings:
Fig. 1 is a measurement mechanism structural representation of the present utility model;
Wherein: 1 for adjusting screw rod; 2 is upper backup pad; 3-1 is first lock-screw; 3-2 is second lock-screw; 4 is the test specimen set collar; 5 is last test specimen; 6 is the pressure transducer set collar; 7-1 is first column; 7-2 is second column; 8 is lower supporting plate; 9 is lifting jack; 10 is pressure transducer; 11 is pressure transducer top cap; 12 are following test specimen; 13 is axial extensometer; 14 is the steel ball set collar; 15 is spherical ball; 16 is the hollow orienting sleeve; 17 is the screw rod guide pin bushing.
Embodiment:
Below in conjunction with accompanying drawing the utility model is done and to be described in further detail:
As shown in Figure 1, the utility model is a kind of measurement mechanism that is applicable to the faying face static method to contact stiffness, and this measurement mechanism comprises: measurement bracket, charger, measurement mechanism, regulating device and test specimen to be measured.
Measurement bracket comprises upper backup pad 2, the first column 7-1 and is the second column 7-2 and lower supporting plate 8 that the three is assembled into one, remains to maintain static in measuring process.
Charger comprises a lifting jack 9, and lifting jack 9 is fixed in the lower supporting plate 8.
Measurement mechanism comprises pressure transducer 10, pressure transducer top cap 11, pressure transducer set collar 6 and axial extensometer 13.Wherein: pressure transducer 10 be fixed on lifting jack 9 directly over, pressure transducer top cap 11 is enclosed within the measurement top of pressure transducer 10, pressure transducer set collar 6 is fixed on the lower supporting plate 8, pressure transducer 10 and top cap 11 are played fixing and guide effect, and axially extensometer 13 two blades in measuring process are clamped in respectively on two test specimens to be measured.
Regulating device comprises adjusts screw rod 1, screw rod guide pin bushing 17, hollow orienting sleeve 16, the first lock-screw 3-1 and the second lock-screw 3-2, spherical ball 15, test specimen set collar 4, steel ball set collar 14.Wherein, the band handle adjustment screw rod 1 be positioned at measurement bracket directly over, screw rod guide pin bushing 17 and upper backup pad 2 immovable fitting, with adjustment screw rod 1 thread connection, hollow orienting sleeve 16 is fixed on the upper backup pad 2, test specimen set collar 4 is arranged in the hollow orienting sleeve 16, be positioned at test specimen to be measured directly over, the first lock-screw 3-1 and the second lock-screw 3-2 are arranged in the tapped through hole on the hollow orienting sleeve 16, can screw in back-out, spherical ball 15 is enclosed in the test specimen set collar 4 by steel ball set collar 14, can be in the test specimen set collar 4 rotates freely.
Test specimen to be measured comprises test specimen 5 and following test specimen 12, following test specimen 12 be positioned at pressure transducer top cap 11 directly over, last test specimen 5 be positioned at following test specimen 12 directly over, there is ball-and-socket on the top of last test specimen 5, be spherical ball 15 directly over the ball-and-socket, cooperate, the local contact of faying face in the time of can preventing to load by bulb-ball-and-socket, guarantee that entire joint face contacts fully, be fixed on by the clamping blade on test specimen 5 and the following test specimen 12 near axial extensometer 13 faying face.
Adopt the utility model to carry out the faying face static method when the measurement of contact stiffness, specific implementation process comprises the following steps:
1) regulates adjustment screw rod 1, test specimen set collar 4 can be slided up and down in hollow orienting sleeve 16, regulate the first lock-screw 3-1 and the second lock-screw 3-2, make test specimen set collar 4 be fixed on a suitable position and conveniently put into test specimen;
2) the following test specimen 12 that will have a particular surface roughness be placed on pressure transducer top cap 11 directly over, last test specimen 5 be placed on down test specimen 12 directly over, make spherical ball 15 embed ball-and-socket, fixedly test specimens by regulating the adjustment screw rod 1 and the first lock-screw 3-1 and the second lock-screw 3-2;
3) lifting jack 9 is evenly afterburning, and until arriving predetermined maximum pressure, the pressure between faying face and the distortion of test specimen record by pressure transducer 10 and axial extensometer 13 respectively, evenly gather the data of power and distortion
4) after one group of experiment is finished, repeat above-mentioned steps, change next group test specimen, so, can obtain the measurement data of the dissimilar faying face of many groups
5) in every group of test specimen, obtain the data of many group pressure and displacement after, carry out Data Post, obtain the pressure-displacement curve of every group of test specimen faying face, thereby try to achieve static method between faying face to contact stiffness.
Measuring principle of the present utility model is that when applying the normal direction normal pressure at the faying face two ends, axially the distortion of extensometer measurement comprises two parts: the one, and the normal direction distortion of faying face, the 2nd, the elastic deformation of the material between two clamping blades of axial extensometer.The elastic deformation of material can be by Hooke's law
Figure BDA0000035984230000051
Directly calculate, wherein, F is the normal direction normal pressure between faying face, and A is the nominal contact area of faying face, and L is the distance of test specimen faying face end distance from axial extensometer clamping blade.Therefore, the normal direction distortion that under the effect of normal direction normal pressure F, produced of faying face: δ=W-Δ L 1-Δ L 2, wherein, W is the distortion that axial extensometer records, Δ L 1, Δ L 2It is the elastic deformation of the material that obtains of Theoretical Calculation.Like this, under repeatedly loading by pressure transducer measure normal pressure, axially extensometer is measured distortion and just can obtained the force-displacement curve of faying face, thereby the static method of trying to achieve faying face is to contact stiffness.
Above content is to further describing that the utility model is done in conjunction with concrete preferred implementation; can not assert that embodiment of the present utility model only limits to this; for the utility model person of an ordinary skill in the technical field; under the prerequisite that does not break away from the utility model design; can also make some simple deduction or replace, all should be considered as belonging to the utility model and determine scope of patent protection by claims of being submitted to.

Claims (6)

1. measurement mechanism that is applicable to the faying face static method to contact stiffness, it is characterized in that: this measurement mechanism comprises: measurement bracket, charger, measurement mechanism, regulating device and test specimen to be measured; Described charger fixed placement is measurement mechanism, test specimen to be measured and regulating device directly over it in the bottom of test bracket successively, and charger, measurement mechanism, test specimen to be measured and regulating device all are positioned at measurement bracket.
2. a kind of according to claim 1 measurement mechanism that is applicable to the faying face static method to contact stiffness is characterized in that: described measurement mechanism comprises a pressure transducer, sensor top cap, pressure transducer set collar and an axial extensometer; Pressure transducer be fixed on lifting jack directly over, pressure transducer top cap sleeve is on the measurement top of pressure transducer, the pressure transducer set collar is fixed on the lower supporting plate, pressure transducer and top cap are played fixing and guide effect, and axially extensometer two blades in measuring process are clamped in respectively on two test specimens to be measured.
3. a kind of according to claim 1 measurement mechanism that is applicable to the faying face static method to contact stiffness is characterized in that: described regulating device comprises adjusts screw rod, screw rod guide pin bushing, hollow orienting sleeve, first lock-screw, second lock-screw, spherical ball, test specimen set collar, steel ball set collar; Wherein, the band handle the adjustment screw rod be positioned at measurement bracket directly over, screw rod guide pin bushing and upper backup pad immovable fitting connect with the adjustment screw flight, and the hollow orienting sleeve is fixed on the upper backup pad, the test specimen set collar is arranged in the hollow orienting sleeve, be positioned at test specimen to be measured directly over, first lock-screw and second lock-screw are arranged in the tapped through hole on the hollow orienting sleeve, can screw in back-out, spherical ball is enclosed in the test specimen set collar by the steel ball set collar, rotates freely in the test specimen set collar.
4. a kind of according to claim 1 measurement mechanism that is applicable to the faying face static method to contact stiffness, it is characterized in that: described test specimen to be measured comprises test specimen and following test specimen, following test specimen be positioned at pressure transducer top cap directly over, last test specimen be positioned at following test specimen directly over, there is ball-and-socket on the top of last test specimen, it directly over the ball-and-socket spherical ball, by bulb-local contact of faying face when ball-and-socket cooperation prevents to load, guarantee that entire joint face contacts fully, be fixed on by the clamping blade on test specimen and the following test specimen near the axial extensometer faying face.
5. a kind of according to claim 1 measurement mechanism that is applicable to the faying face static method to contact stiffness, it is characterized in that: described measurement bracket comprises upper backup pad, first column and is second column and lower supporting plate, the three is assembled into one, remains to maintain static in measuring process.
6. a kind of according to claim 1 measurement mechanism that is applicable to the faying face static method to contact stiffness is characterized in that: described charger comprises a lifting jack, and lifting jack is fixed in the lower supporting plate.
CN2010206399652U 2010-12-03 2010-12-03 Measuring device of static normal direction contact stiffness of junction plane Expired - Lifetime CN201876396U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010206399652U CN201876396U (en) 2010-12-03 2010-12-03 Measuring device of static normal direction contact stiffness of junction plane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010206399652U CN201876396U (en) 2010-12-03 2010-12-03 Measuring device of static normal direction contact stiffness of junction plane

Publications (1)

Publication Number Publication Date
CN201876396U true CN201876396U (en) 2011-06-22

Family

ID=44164312

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010206399652U Expired - Lifetime CN201876396U (en) 2010-12-03 2010-12-03 Measuring device of static normal direction contact stiffness of junction plane

Country Status (1)

Country Link
CN (1) CN201876396U (en)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102426085A (en) * 2011-08-19 2012-04-25 西安理工大学 Device and method for testing contact rigidity of spherical surface-revolution surface junction surface
CN102519717A (en) * 2011-12-08 2012-06-27 西安交通大学 Ultrasonic reflectivity extraction system which detects revolution composition surface contact characteristic and method thereof
CN102589865A (en) * 2012-02-17 2012-07-18 北京工业大学 Normal stiffness and hysteresis characteristic test experimental device for double-bolt joint surface
WO2013020328A1 (en) * 2011-08-09 2013-02-14 西安理工大学 Device and method for testing relationship between rigidity and non-linearity of coupling interface for cylindrical fitting
CN103115778A (en) * 2012-07-03 2013-05-22 重庆长安汽车股份有限公司 Fixing device for measurement of rigidity of automobile emission lifting lug
CN103217278A (en) * 2013-01-05 2013-07-24 北京工业大学 Device and method for testing normal static characteristics of junction surface of high-strength bolt
CN103257050A (en) * 2013-03-27 2013-08-21 清华大学 Three-directional static rigidity synchronous testing system for machine tool
CN104019977A (en) * 2014-06-17 2014-09-03 沈阳机床(集团)有限责任公司 Test device for testing contact characteristic of fixed junction surface of machine tool
CN104062181A (en) * 2014-06-17 2014-09-24 西安建筑科技大学 Test device for acquiring normal contact rigidity of joint surface, and modeling method
CN104568739A (en) * 2015-01-27 2015-04-29 西安理工大学 Rapid measurement device for contact rigidity and unit contact area ratio of combined surface
CN105158055A (en) * 2015-05-04 2015-12-16 广东工业大学 Method and technology for detecting contact rigidity by second-order characteristic frequency
CN105241621A (en) * 2015-11-13 2016-01-13 西北工业大学 Device and method of rigidity measurement of flapping wing ribs
CN106248485A (en) * 2016-08-19 2016-12-21 华侨大学 A kind of assay device determining metal material contact-impact deformation index
CN106289983A (en) * 2016-07-28 2017-01-04 南京理工大学 The laser-ultrasound detection device of Studies On Contacts of Rough Surfaces state
CN106546504A (en) * 2016-10-31 2017-03-29 华中科技大学 A kind of loading force direction-adaptive adjusting apparatus, autoclave pressure and test platform
CN107068526A (en) * 2016-08-31 2017-08-18 中航西安飞行自动控制技术有限公司 A kind of clamping device for micro- flexible part Analysis of Surface Topography
CN108088399A (en) * 2017-11-03 2018-05-29 上海拓璞数控科技股份有限公司 The detection device and method of machine tool accuracy under stress state
CN108318199A (en) * 2017-12-28 2018-07-24 西安理工大学 A kind of Machine Joint Surfaces normal direction basic characteristic parameter test device and method
CN110006750A (en) * 2019-04-02 2019-07-12 清华大学 A dynamic measurement system for spherical tangential stiffness based on optical method
CN110308049A (en) * 2019-07-18 2019-10-08 天水红山试验机有限公司 Multi-dimensional loading comprehensive test system
CN111024341A (en) * 2019-12-25 2020-04-17 大连理工大学 Contact rigidity testing device and testing method
CN113340804A (en) * 2021-06-07 2021-09-03 北京理工大学 Test device for accurately measuring static friction coefficient
CN114062244A (en) * 2020-08-03 2022-02-18 北京理工大学 Experiment measurement device, experiment equipment and experiment measurement method

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013020328A1 (en) * 2011-08-09 2013-02-14 西安理工大学 Device and method for testing relationship between rigidity and non-linearity of coupling interface for cylindrical fitting
CN102426085A (en) * 2011-08-19 2012-04-25 西安理工大学 Device and method for testing contact rigidity of spherical surface-revolution surface junction surface
CN102519717B (en) * 2011-12-08 2014-11-05 西安交通大学 Ultrasonic reflectivity extraction system which detects revolution composition surface contact characteristic and method thereof
CN102519717A (en) * 2011-12-08 2012-06-27 西安交通大学 Ultrasonic reflectivity extraction system which detects revolution composition surface contact characteristic and method thereof
CN102589865A (en) * 2012-02-17 2012-07-18 北京工业大学 Normal stiffness and hysteresis characteristic test experimental device for double-bolt joint surface
CN103115778A (en) * 2012-07-03 2013-05-22 重庆长安汽车股份有限公司 Fixing device for measurement of rigidity of automobile emission lifting lug
CN103217278A (en) * 2013-01-05 2013-07-24 北京工业大学 Device and method for testing normal static characteristics of junction surface of high-strength bolt
CN103217278B (en) * 2013-01-05 2015-09-02 北京工业大学 A kind of method of testing high-strength bolt faying face normal direction static characteristics
CN103257050A (en) * 2013-03-27 2013-08-21 清华大学 Three-directional static rigidity synchronous testing system for machine tool
CN104019977A (en) * 2014-06-17 2014-09-03 沈阳机床(集团)有限责任公司 Test device for testing contact characteristic of fixed junction surface of machine tool
CN104062181A (en) * 2014-06-17 2014-09-24 西安建筑科技大学 Test device for acquiring normal contact rigidity of joint surface, and modeling method
CN104568739A (en) * 2015-01-27 2015-04-29 西安理工大学 Rapid measurement device for contact rigidity and unit contact area ratio of combined surface
CN105158055A (en) * 2015-05-04 2015-12-16 广东工业大学 Method and technology for detecting contact rigidity by second-order characteristic frequency
CN105241621A (en) * 2015-11-13 2016-01-13 西北工业大学 Device and method of rigidity measurement of flapping wing ribs
CN105241621B (en) * 2015-11-13 2016-09-28 西北工业大学 Flutter thriving rib stiffness measurement device and stiffness measurement method
CN106289983A (en) * 2016-07-28 2017-01-04 南京理工大学 The laser-ultrasound detection device of Studies On Contacts of Rough Surfaces state
CN106289983B (en) * 2016-07-28 2019-04-16 南京理工大学 The laser-ultrasound detection device of Studies On Contacts of Rough Surfaces state
CN106248485A (en) * 2016-08-19 2016-12-21 华侨大学 A kind of assay device determining metal material contact-impact deformation index
CN107068526A (en) * 2016-08-31 2017-08-18 中航西安飞行自动控制技术有限公司 A kind of clamping device for micro- flexible part Analysis of Surface Topography
CN107068526B (en) * 2016-08-31 2018-11-16 中航西安飞行自动控制技术有限公司 A kind of clamping device for micro- flexible part Analysis of Surface Topography
CN106546504A (en) * 2016-10-31 2017-03-29 华中科技大学 A kind of loading force direction-adaptive adjusting apparatus, autoclave pressure and test platform
CN106546504B (en) * 2016-10-31 2019-04-12 华中科技大学 A kind of loading force direction-adaptive adjustment device, autoclave pressure and test platform
CN108088399B (en) * 2017-11-03 2020-02-18 上海拓璞数控科技股份有限公司 Device and method for detecting machine tool precision in loading state
CN108088399A (en) * 2017-11-03 2018-05-29 上海拓璞数控科技股份有限公司 The detection device and method of machine tool accuracy under stress state
CN108318199B (en) * 2017-12-28 2020-06-26 西安理工大学 A device and method for testing the normal basic characteristic parameters of a mechanical joint surface
CN108318199A (en) * 2017-12-28 2018-07-24 西安理工大学 A kind of Machine Joint Surfaces normal direction basic characteristic parameter test device and method
CN110006750A (en) * 2019-04-02 2019-07-12 清华大学 A dynamic measurement system for spherical tangential stiffness based on optical method
CN110006750B (en) * 2019-04-02 2020-07-14 清华大学 A dynamic measurement system for spherical tangential stiffness based on optical method
CN110308049A (en) * 2019-07-18 2019-10-08 天水红山试验机有限公司 Multi-dimensional loading comprehensive test system
CN111024341A (en) * 2019-12-25 2020-04-17 大连理工大学 Contact rigidity testing device and testing method
CN114062244A (en) * 2020-08-03 2022-02-18 北京理工大学 Experiment measurement device, experiment equipment and experiment measurement method
CN113340804A (en) * 2021-06-07 2021-09-03 北京理工大学 Test device for accurately measuring static friction coefficient

Similar Documents

Publication Publication Date Title
CN201876396U (en) Measuring device of static normal direction contact stiffness of junction plane
CN107038311A (en) A kind of resonant Fatigue Testing Loads collocation method of pneumatic equipment bladess
CN109283041B (en) Experimental device and experimental method for measuring ultimate contact stress of connected piece in bolt node
CN103217282B (en) Fatigue test method of blade scaling model of horizontal axis wind turbine based on equal-service-life principle
CN108844824B (en) A method for the determination of residual stress in known materials based on a conical indenter
CN101839798A (en) Device for hypersonic pitching dynamic test
CN104134013B (en) Wind turbine blade modal analysis method
CN202471397U (en) Elastic support parts flexibility tester
CN202757856U (en) Calibrating device for extensometer measuring system
CN104155092B (en) Wind turbine blade static analysis method
CN204594625U (en) A kind of high precision mass property force transfering device
CN203324001U (en) Computer-based real-time measuring apparatus for pushing force
CN205691410U (en) The damage concrete stress strain full curve test device that environmental corrosion causes
CN102841013A (en) Method for measuring yield strength of non-planar structure material
CN203858153U (en) Pressure full-curve test device
CN102759505B (en) Auxiliary device for compression test of plate material and determination method of flow stress curve
CN104359435A (en) Constraint measuring tool and using method thereof
CN101598630A (en) A centering and leveling test device for two-way knife-edge support
CN208520320U (en) A kind of metal plate specification detection jig
CN204338620U (en) A kind of specimen supporting device for cold bending test
CN103233485B (en) Pile group model with built-in measuring elements and production method of pile group model
CN113642180B (en) Online sensing method for spinning forming state
CN206321193U (en) A kind of special gauge for IC engine airframe cylinder holes coaxality measurement
CN201476776U (en) Instrument for measuring single-sided convex value of bearing
CN113626953B (en) High-energy-efficiency milling error dynamic distribution characteristic identification method

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20110622