CN105043901A - Device for testing mechanical connection structure shearing property and test method thereof - Google Patents
Device for testing mechanical connection structure shearing property and test method thereof Download PDFInfo
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- CN105043901A CN105043901A CN201510501684.8A CN201510501684A CN105043901A CN 105043901 A CN105043901 A CN 105043901A CN 201510501684 A CN201510501684 A CN 201510501684A CN 105043901 A CN105043901 A CN 105043901A
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Abstract
The invention belongs to the field of mechanics performance testing of a mechanical connection structure, and provides a device for testing a mechanical connection structure shearing property and a test method thereof. Two technical problems can be solved according to the invention: the tensile (compression)/ shear composite load (adjustable load ratio) of a mechanical connection structure can be realized, and the symmetry and the stability of the load are ensured. The device concretely comprises two loading joints (1) of a testing machine, two long beams (2), two short beams (4), two sliding rails (5) and two connectors (6) of a test piece, wherein the two long beams (2) and the two short beams (4) are connected to form a parallelogram structure in a rotating manner; two rotary junctions symmetrical at the center of the parallelogram structure are respectively connected with the loading joints (1); the two long beams (2) are fixedly provided with the sliding rails (5) respectively, each connector (6) of the test piece corresponds to one sliding rail (5), and is slidably connected with the sliding rail (5) in a matching manner.
Description
Technical field
The invention belongs to mechanical connecting structure Mechanics Performance Testing field, provide a kind of mechanical connecting structure shearing performance test device.
Background technology
Cutting performance is the important component part of material mechanical performance, therefore needs the cutting performance of design experiment apparatus and method to material to test and characterize.For compound substance, the shearing performance test for material can adopt ASTM standard method of test, but the method is only applicable to the pure shear performance test of small sample.
In aeroplane structure design, wing spar should bear shear-type load, bears bending load again.This makes spar web be subject to the compound loading effect stretching/shear or compress/shear.Usually adopt bolt to be mechanically connected in spar segmentation place, at this moment need the mechanical property under the cutting performance of test mechanical syndeton and stretching (compression)/shearing compound loading.In this case, on the one hand its can not carry out stretching (compression)/shear compound loading, another aspect mechanical connecting structure can not be connected with fixture by 4 limits.
Based on above consideration, invent mechanical connecting structure shearing performance test device.
In prior art, from patent " a kind of device for testing mechanical properties of thin sheet under simple shear loading ", application number 201010553215.8.The program is connected with the two ends of test specimen with right clamp assembly respectively by left clamp assembly, and two assemblies apply direction contrary tensile load respectively, is connected the stability loaded with warranty test between left clamp assembly and right clamp assembly by slide rail.The program is only applicable to thin-slab construction, and can only carry out pure shear Mechanics Performance Testing.
From patent " Shearandtensionorcompressionbiaxialmaterialtestingfixtur e ", application number WO2012DK50030A.The program is fixed with the two ends of testpieces respectively by the S type assembly that two are separated from each other, and two assemblies apply the contrary tensile load in direction, and by regulating the position of load(ing) point to realize the compound loading that stretches (compression)/shear.The program is only applicable to small sample, and easily causes the assymmetrical deformation of test fixture.Especially when the thickness of the two-part structure be connected or modulus different time, the program is more inapplicable.
The technical matters that the shortcoming of prior art and the application's motion will solve
For current existing technical scheme, being applied to mechanical connecting structure shearing performance test has 2 obvious shortcomings:
(1) compound loading (adjustable loading ratio) stretching (compression)/shear cannot be realized;
(2) when the two-part structure thickness be connected or modulus inconsistent time, cannot stablize, symmetrically testpieces be loaded.
Summary of the invention
The present invention can solve two technical matterss: realize stretching (the compression)/shearing compound loading (adjustable loading ratio) to mechanical connecting structure, and ensures symmetry and the stability of loading.The key point of case of the present invention and wish protection point:
(1) invented a kind of novel test device, not only can carry out pure shear loading to mechanical connecting structure, stretching (the compression)/shearing compound loading of adjustable loading ratio can also have been realized.
(2) test unit is assembled into rectangular configuration by 4 long beams and 2 end floor beams, and is connected with testpieces jointing by slide rail, applies tensile load at the diagonal angle of rectangle, ensures to apply pure shear load symmetrically.
(3) test unit is assembled into parallelogram sturcutre by 4 long beams and 2 tail trimmers, testpieces jointing and crossbeam are bolted, and can be realized the applying of different proportion stretching (compression)/shear-type load by the angle adjusting parallelogram.
Technical scheme
The invention provides a kind of mechanical connecting structure shearing performance test device, comprise 2 testing machines and load joint (1), 2 long beams (2), 2 tail trimmers (4), 2 slide rails (5), 2 testpieces jointings (6); 2 long beams (2) are rotatably connected for parallelogram sturcutre with 2 tail trimmers (4), at centrosymmetric two loading joints (1) be rotationally connected a little respectively described in connection of described parallelogram sturcutre; Described 2 long beams (2) are fixed with slide rail (5) respectively, the corresponding slide rail (5) of each testpieces jointing (6), and with slide rail (5) sliding connection.
Beneficial effect
(1) compound loading that stretching (compression) is sheared can be realized.The parallelogram of 4 long beams and 2 tail trimmer composition special angles is passed through in the application's motion, the two ends of mechanical connection testpieces are bolted with long beam respectively, apply tensile load can realize (compression) compound loading sheared that stretches at the diagonal angle of parallelogram.
(2) Absorbable organic halogens, symmetrical testpieces is loaded.Mechanical connecting structure may be unsymmetric structure, and the thickness or the modulus that are namely connected two-part structure are inconsistent.Because the application's motion is closed rectangle or parallelogram, and the rigidity of fixture is far above mechanical connection testpieces, be no matter that pure shear loads or the compound loading that stretches (compression)/shear all can realize stablizing, symmetry testpieces is loaded
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is annexation schematic diagram of the present invention;
Fig. 3 is the annexation schematic diagram of anti-drift spring of the present invention and proving installation;
Fig. 4 pure shear load test schematic diagram;
Fig. 5 compresses/shears combined loading test schematic diagram;
Wherein: 1-loads joint, 2-loads joint, 3-anti-drift spring, 4-tail trimmer, 5-slide rail, 6-testpieces jointing, 7-are mechanically connected testpieces.
Embodiment
As in Fig. 1, specifically provide a kind of mechanical connecting structure shearing performance test device, comprise 2 testing machines and load joint (1), 2 long beams (2), 2 tail trimmers (4), 2 slide rails (5), 2 testpieces jointings (6); 2 long beams (2) are rotatably connected for parallelogram sturcutre with 2 tail trimmers (4), at centrosymmetric two loading joints (1) be rotationally connected a little respectively described in connection of described parallelogram sturcutre; Described 2 long beams (2) are fixed with slide rail (5) respectively, the corresponding slide rail (5) of each testpieces jointing (6), and with slide rail (5) sliding connection.
Particularly, also comprise the limit spring (3) that 2 prevent testpieces slippage, between each testpieces jointing (6) and corresponding slide rail, all can connect described limit spring.
Particularly, also comprise 2 register pins, each testpieces jointing (6) and slide rail all have pilot hole, described pilot hole and described register pin adaptation.
Particularly, long beam (2) and tail trimmer (4) all have equally spaced circular hole, and each circular hole can both as being rotationally connected a little.
Particularly, each long beam (2) is double-decker, and described tail trimmer (4) is clipped in the middle of double-decker and connects.
More particularly, described slide rail (5) is fixed on the centre position of long beam (2).
More particularly, described long beam (2) and tail trimmer (4) are plate, particularly metal sheet.
Provide a kind of method that the present invention of utilization carries out shearing performance test simultaneously, described 2 testing machines are loaded joint (1) joint test machine respectively, each testpieces jointing (6) is connected with testpieces two ends, and testpieces jointing (6) turn is fitted on slide rail, limit spring is connected between testpieces jointing (6) and corresponding slide rail again, is loaded by testing machine.
Provide another kind utilizes the present invention to carry out the method for shearing performance test simultaneously, described 2 testing machines are loaded joint (1) joint test machine respectively, each testpieces jointing (6) is connected with testpieces two ends, and testpieces jointing (6) turn is fitted on slide rail, register pin is installed in the pilot hole of testpieces jointing (6) and slide rail again, is loaded by testing machine.
When carrying out pure shear test, asymmetric in order to prevent testpieces from loading, testpieces jointing (6) is connected by anti-drift spring (3) with long beam (2) by proving installation both sides respectively.The rigidity of anti-drift spring (3) is lower, does not affect the stressed of testpieces.
Using method of the present invention
This proving installation can carry out pure shear loading or stretching (compression)/shearing compound loading to mechanical connecting structure, with the mechanical property under the pure shear performance of test mechanical syndeton or stretching (compression)/shearing compound loading.
When carrying out pure shear and loading, proving installation is assembled into rectangle, is connected with testing machine by loading joint (1) B, D (or A, C) 2, and by testing machine, tensile load is applied to proving installation.Testpieces jointing (6) can be free to slide in slide rail (5), installs anti-drift spring (3) to prevent the skew of testpieces simultaneously.
Carrying out compressing/when shearing compound loading, as required proving installation is assembled into the parallelogram of certain degree, is connected with testing machine by loading joint (1) B, D 2, and by testing machine, tensile load is applied to proving installation.Testpieces jointing (6) is connected by bolt with slide rail (5), between the two without relative motion, does not now need to install anti-drift spring (3).
Carrying out stretching/when shearing compound loading, only load(ing) point need be changed to A, C from B, D, all the other implementation methods are identical with stretching/shearing compound loading.
Claims (9)
1. a mechanical connecting structure shearing performance test device, is characterized in that: comprise 2 testing machines and load joint (1), 2 long beams (2), 2 tail trimmers (4), 2 slide rails (5), 2 testpieces jointings (6); 2 long beams (2) are rotatably connected for parallelogram sturcutre with 2 tail trimmers (4), at centrosymmetric two loading joints (1) be rotationally connected a little respectively described in connection of described parallelogram sturcutre; Described 2 long beams (2) are fixed with slide rail (5) respectively, the corresponding slide rail (5) of each testpieces jointing (6), and with slide rail (5) sliding connection.
2. a kind of mechanical connecting structure shearing performance test device according to claim 1, it is characterized in that: also comprise the limit spring (3) that 2 prevent testpieces slippage, between each testpieces jointing (6) and corresponding slide rail, all can connect described limit spring.
3. a kind of mechanical connecting structure shearing performance test device according to claim 1 and 2, it is characterized in that: also comprise 2 register pins, each testpieces jointing (6) and slide rail all has pilot hole, described pilot hole and described register pin adaptation.
4. a kind of mechanical connecting structure shearing performance test device according to claim 1 and 2, is characterized in that: long beam (2) and tail trimmer (4) all have equally spaced circular hole, and each circular hole can both as being rotationally connected a little.
5. a kind of mechanical connecting structure shearing performance test device according to claim 1 and 2, is characterized in that: each long beam (2) is double-decker, and described tail trimmer (4) is clipped in the middle of double-decker and connects.
6. a kind of mechanical connecting structure shearing performance test device according to claim 1 and 2, is characterized in that: described slide rail (5) is fixed on the centre position of long beam (2).
7. a kind of mechanical connecting structure shearing performance test device according to claim 1 and 2, is characterized in that: described long beam (2) and tail trimmer (4) are plate.
8. utilize the mechanical connecting structure shearing performance test device of one of claim 1-7 to carry out a method for shearing performance test,
Described 2 testing machines are loaded joint (1) joint test machine respectively, each testpieces jointing (6) is connected with testpieces two ends, and testpieces jointing (6) turn is fitted on slide rail, limit spring is connected between testpieces jointing (6) and corresponding slide rail again, is loaded by testing machine.
9. utilize the mechanical connecting structure shearing performance test device of one of claim 1-7 to carry out a method for shearing performance test,
Described 2 testing machines are loaded joint (1) joint test machine respectively, each testpieces jointing (6) is connected with testpieces two ends, and testpieces jointing (6) turn is fitted on slide rail, register pin is installed in the pilot hole of testpieces jointing (6) and slide rail again, is loaded by testing machine.
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| CN201510501684.8A CN105043901B (en) | 2015-08-14 | 2015-08-14 | A kind of mechanical connecting structure shearing performance test device and its test method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105842084A (en) * | 2016-03-25 | 2016-08-10 | 北京交通大学 | Measurement device of wood along-grain direction pure shear strength |
| CN106442167A (en) * | 2016-09-21 | 2017-02-22 | 中国商用飞机有限责任公司 | Metal web pure shear fatigue test device |
| CN106769543A (en) * | 2017-04-06 | 2017-05-31 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | A kind of composite material spar docking structure shearing performance test devices and methods therefor |
| CN110220804A (en) * | 2019-06-17 | 2019-09-10 | 河南交通职业技术学院 | A kind of pressure-shear test machine |
| 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 |
| CN114544390A (en) * | 2022-01-20 | 2022-05-27 | 邯郸钢铁集团有限责任公司 | Bias loading sample and method for testing shearing and wrinkling performance of plate |
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| CN2779380Y (en) * | 2005-04-11 | 2006-05-10 | 南京航空航天大学 | Tensile shear and compressive shear compound load test apparatus |
| CN101672744B (en) * | 2009-10-23 | 2011-03-16 | 北京工业大学 | Reversed loading test device under combined action |
| CN201628664U (en) * | 2009-12-23 | 2010-11-10 | 浙江吉利汽车研究院有限公司 | Rigidity detecting device for air bag braid |
| WO2012100780A1 (en) * | 2011-01-25 | 2012-08-02 | Aalborg Universitet | Shear and tension or compression biaxial material testing fixture |
| CN102735545B (en) * | 2012-07-04 | 2014-02-12 | 哈尔滨工业大学 | Two-way compressing and shearing composite loading test device |
| CN103454151A (en) * | 2013-08-20 | 2013-12-18 | 中国商用飞机有限责任公司 | Compression-shear composite loading test device |
| FR3011930B1 (en) * | 2013-10-16 | 2016-06-10 | Axens | METHOD AND APPARATUS FOR SHEAR MECHANICAL CHARACTERIZATION OF A GRID |
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- 2015-08-14 CN CN201510501684.8A patent/CN105043901B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105842084A (en) * | 2016-03-25 | 2016-08-10 | 北京交通大学 | Measurement device of wood along-grain direction pure shear strength |
| CN106442167A (en) * | 2016-09-21 | 2017-02-22 | 中国商用飞机有限责任公司 | Metal web pure shear fatigue test device |
| CN106442167B (en) * | 2016-09-21 | 2018-07-06 | 中国商用飞机有限责任公司 | Metal web pure shear fatigue test device |
| CN106769543A (en) * | 2017-04-06 | 2017-05-31 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | A kind of composite material spar docking structure shearing performance test devices and methods therefor |
| CN106769543B (en) * | 2017-04-06 | 2019-08-09 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | A kind of composite material spar docking structure shearing performance test devices and methods therefor |
| CN110220804A (en) * | 2019-06-17 | 2019-09-10 | 河南交通职业技术学院 | A kind of pressure-shear test machine |
| CN110220804B (en) * | 2019-06-17 | 2024-05-03 | 河南交通职业技术学院 | Pressure shear testing machine |
| 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 |
| CN114544390A (en) * | 2022-01-20 | 2022-05-27 | 邯郸钢铁集团有限责任公司 | Bias loading sample and method for testing shearing and wrinkling performance of plate |
| CN114544390B (en) * | 2022-01-20 | 2023-08-29 | 邯郸钢铁集团有限责任公司 | Offset loading sample and method for testing shearing wrinkling performance of plate |
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