CN204165831U - A kind of for testing V-type open beam sample testing shear performance fixture - Google Patents
A kind of for testing V-type open beam sample testing shear performance fixture Download PDFInfo
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- CN204165831U CN204165831U CN201420573795.0U CN201420573795U CN204165831U CN 204165831 U CN204165831 U CN 204165831U CN 201420573795 U CN201420573795 U CN 201420573795U CN 204165831 U CN204165831 U CN 204165831U
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Abstract
The utility model relates to a kind of for testing V-type open beam sample testing shear performance fixture, to reach the object of V-type open beam sample shear being cut to Mechanics Performance Testing.Comprise fixture and lower clamp, described upper fixture and lower clamp main body are rectangular parallelepiped, have the draw-in groove for installing v-notch beam sample in the surface design with v-notch beam sample contacts; Upper fixture and lower clamp form antisymmetry structure in use; Described upper fixture upper surface is designed with loading projection, load projection for applying test load, load the center line of projection and the v-notch center line of v-notch beam sample to be consistent, like this can warranty test time loading direction consistent with direction, v-notch face.This fixture can ensure to produce near compound substance v-notch beam sample opening to shear mechanical state uniformly, fixture be easy to processing, easy to use, especially test Mass lose time without the need to sample two sides paste reinforced sheet, substantially increase test efficiency.
Description
Technical field
The utility model relates to a kind of test fixture of test material cutting performance, is specially adapted to the fixture of test compound material V-type open beam sample testing shear performance.
Background technology
Laminated Shear Deformable performance is one of its key property, is the parameter needing emphasis to consider in composite material structural member design.The method of existing test compound material cutting performance has a lot, as: short beam method, track shearing method, off-axis tension etc., these test methods also exist certain shortcoming separately, and short beam method can only test compound material interlaminar strength, track shearing method can only cutting performance in test compound material face, off-axis tension method, owing to there is coupling effect, causes its test result not to be very accurate, and the method can only cutting performance in test surfaces.Based on above reason, propose v-notch beam test method both at home and abroad, and define relevant criterion, as ASTM D5379, HB7237.
V-notch beam test and short beam method, track shearing method is compared with off-axis tension test, its feature is the pure shear stress state being produced approaches uniformity by specific frock near sample v-notch, avoid the impact of coupling effect on stress state near sample v-notch, thus improve the measuring accuracy of its cutting performance, the method can according in the difference acquisition face in sample sampling direction and interlaminar shear strength and modulus in addition.
A kind of test fixture being applicable to the test of compound substance V-type open beam is all described in ASTM D5379 and HB7237-95 standard, this fixture can ensure that loading direction is consistent with the direction in v-notch face, can ensure that sample can only move on loading direction, limit diastrophic generation, near v-notch, produce approximate pure shear stress state, but there is following shortcoming in this fixture:
1) clamp structure is complicated, requires very high, the especially material of tube-in-tube structure to clamp material;
2) fixture uses inconvenience, repeatedly need adjust, can ensure that loading direction is consistent with v-notch face in using;
3) by the jacking block of both sides coupling bolt, sample is clamped, if misoperation in the process, easily make sample clamp position and just form fail in compression before carrying out test;
4) test Mass lose difficulty, generally test by pasting reinforced sheet mode, thus cause experiment work amount large.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of shearing test clamp being applicable to test compound material V-type open beam, this clamp structure is simple, easy to use, V-type open beam gap portions can be realized and produce pure shear mechanical state, to reach the object to Laminated Shear Deformable Mechanics Performance Testing.
For solving the technical matters existed, the technical solution adopted in the utility model is: as shown in Figure 1, comprises fixture 1 and lower clamp 3.
As shown in accompanying drawing 2 and accompanying drawing 3, described upper fixture 1 and lower clamp 3 main body are rectangular parallelepiped, have the 4th draw-in groove 6, first draw-in groove 7, second draw-in groove 8 and the 3rd draw-in groove 9 for installing v-notch beam sample 2 in the surface design contacted with v-notch beam sample 2; Upper fixture 1 and lower clamp 3 form antisymmetry structure in use;
Described upper fixture 1 upper surface is designed with and loads projection 5, load projection 5 for applying test load, load the center line of projection 5 and the v-notch center line of v-notch beam sample 2 to be consistent, like this can warranty test time loading direction consistent with direction, v-notch face.
When loading for preventing test, v-notch beam sample 2 slides or loosens in draw-in groove, affect measuring accuracy, at the 4th described draw-in groove 6, first draw-in groove 7, second draw-in groove 8 and the equal machining screw through hole of the 3rd draw-in groove 9 sidewall, for erection bolt 4 with the V-type open beam sample 2 that is fixedly clamped.
The beneficial effects of the utility model are: this fixture can ensure to produce near compound substance v-notch beam sample break to shear mechanical state uniformly, fixture is easy to processing, easy to use, especially test Mass lose time without the need to sample two sides paste reinforced sheet, substantially increase test efficiency.
Accompanying drawing explanation
Fig. 1 is the utility model one-piece construction schematic diagram, and wherein: be upper fixture, 2 is V-type open beam sample, and 3 is lower clamp, and 4 is bolt;
Fig. 2 is fixture schematic diagram on the utility model, wherein: 5 for loading projection, and 6 is the 4th draw-in groove, and 7 is the first draw-in groove, and 10 is tapped through hole;
Fig. 3 is the utility model lower clamp schematic diagram, and wherein: 8 is the second draw-in groove, 9 is the 3rd draw-in groove.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail with concrete enforcement.
As shown in accompanying drawing 2 and accompanying drawing 3, described upper fixture 1 and lower clamp 3 main body are rectangular parallelepiped, have the 4th draw-in groove 6, first draw-in groove 7, second draw-in groove 8 and the 3rd draw-in groove 9 for installing sample in the surface design contacted with V-type open beam sample 2; Upper fixture 1 and lower clamp 3 form antisymmetry structure in use;
Described upper fixture 1 upper surface is designed with and loads projection 5, load projection 5 for applying test load, load the center line of projection 5 and the v-notch center line of V-type open beam sample to be consistent, like this can warranty test time loading direction consistent with direction, v-notch face.
When loading for preventing test, V-type open beam sample slides or loosens, at the 4th described draw-in groove 6, first draw-in groove 7, second draw-in groove 8 and the equal machining screw through hole of the 3rd draw-in groove 9 sidewall, for erection bolt 4 with the sample that is fixedly clamped in draw-in groove;
As shown in Figure 1, the present invention includes fixture 1 and lower clamp 3, upper fixture 1 and lower clamp 3 main body are rectangular parallelepiped, have the 4th draw-in groove 6, first draw-in groove 7, second draw-in groove 8 and the 3rd draw-in groove 9 for installing v-notch beam sample 2 trying with V-type open beam surface design that 2 samples contact; 4th draw-in groove 6 to the first draw-in groove 7 position and lower clamp 3 second draw-in groove 8 of upper fixture 1 form antisymmetry structure in use to the 3rd draw-in groove 9;
V-notch beam sample 2 is installed between fixture 1 and lower clamp 3, and v-notch beam sample 2 is placed in the 4th draw-in groove 6, first draw-in groove 7, second draw-in groove 8 and the 3rd draw-in groove 9 clamping, v-notch beam sample 2 and draw-in groove face close contact.4th draw-in groove 6, first draw-in groove 7, second draw-in groove 8 and the 3rd draw-in groove 9 sidewall are equipped with tapped through hole 10.Then be driven through tapped through hole 10 with fixing v-notch beam sample 2 with bolt 4, make one-piece construction form antisymmetry form.
Bolt 4 is adjusted to ensure the center superposition of v-notch beam sample 2 thickness direction center and upper fixture 1, lower clamp 3 during installation.
V-notch beam sample 2 length direction both ends of the surface are made to align with upper fixture 1 and lower clamp 3 both ends of the surface respectively during installation, namely go up fixture 1 upper surface to be designed with and to load the center line of projection 5 and overlap with the v-notch center line of V-type open beam sample 2, overlap with the v-notch center line of warranty test loading direction with v-notch beam sample 2.
Be positioned on testing machine by the grip device installing v-notch beam sample 2, the loading projection 5 on upper fixture 1 loads, and carries out the measurement of composite sample cutting performance.
Claims (2)
1., for testing a V-type open beam sample testing shear performance fixture, it is characterized in that: comprise fixture (1) and lower clamp (3);
Described upper fixture (1) and lower clamp (3) main body are rectangular parallelepiped, have the 4th draw-in groove (6), the first draw-in groove (7), the second draw-in groove (8) and the 3rd draw-in groove (9) for installing v-notch beam sample (2) in the surface design contacted with v-notch beam sample (2); Upper fixture (1) and lower clamp (3) form antisymmetry structure in use;
Described upper fixture (1) upper surface is provided with and loads projection (5), load projection (5) for applying test load, the v-notch center line of the center line and v-notch beam sample (2) that load projection (5) is consistent.
2. one according to claim 1 is for testing V-type open beam sample testing shear performance fixture, it is characterized in that: when loading for preventing test, v-notch beam sample (2) slides or loosens in draw-in groove, the 4th described draw-in groove (6), the first draw-in groove (7), the second draw-in groove (8) and the equal machining screw through hole (10) of the 3rd draw-in groove (9) sidewall, for erection bolt (4) with the v-notch beam sample (2) that is fixedly clamped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420573795.0U CN204165831U (en) | 2014-09-26 | 2014-09-26 | A kind of for testing V-type open beam sample testing shear performance fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420573795.0U CN204165831U (en) | 2014-09-26 | 2014-09-26 | A kind of for testing V-type open beam sample testing shear performance fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204165831U true CN204165831U (en) | 2015-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420573795.0U Expired - Fee Related CN204165831U (en) | 2014-09-26 | 2014-09-26 | A kind of for testing V-type open beam sample testing shear performance fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204165831U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105259111A (en) * | 2015-10-30 | 2016-01-20 | 黄河水利委员会黄河水利科学研究院 | Pure-shearing experimental device for new and old concrete bonding interfaces |
| CN107063853A (en) * | 2017-06-16 | 2017-08-18 | 哈尔滨工业大学 | A kind of fixture for v-notch beam sample testing shear performance |
-
2014
- 2014-09-26 CN CN201420573795.0U patent/CN204165831U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105259111A (en) * | 2015-10-30 | 2016-01-20 | 黄河水利委员会黄河水利科学研究院 | Pure-shearing experimental device for new and old concrete bonding interfaces |
| CN105259111B (en) * | 2015-10-30 | 2019-11-29 | 黄河水利委员会黄河水利科学研究院 | Linking new and old concrete interface pure shear experimental provision |
| CN107063853A (en) * | 2017-06-16 | 2017-08-18 | 哈尔滨工业大学 | A kind of fixture for v-notch beam sample testing shear performance |
| CN107063853B (en) * | 2017-06-16 | 2023-08-11 | 哈尔滨工业大学 | Clamp for testing shear performance of V-shaped notch beam sample |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150218 Termination date: 20150926 |
|
| EXPY | Termination of patent right or utility model |