CN204302093U - The mechanical property test device that different proportion stretches, bending combination loads can be realized - Google Patents
The mechanical property test device that different proportion stretches, bending combination loads can be realized Download PDFInfo
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- CN204302093U CN204302093U CN201420872493.3U CN201420872493U CN204302093U CN 204302093 U CN204302093 U CN 204302093U CN 201420872493 U CN201420872493 U CN 201420872493U CN 204302093 U CN204302093 U CN 204302093U
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- test specimen
- sliding rail
- cross directional
- slide block
- directional stretch
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Abstract
The utility model discloses and can realize the mechanical property test device that different proportion stretches, bending combination loads, comprising: cross directional stretch mechanism and longitudinal bending mechanism; Cross directional stretch mechanism, comprising: stiff end fixture and transversal stretching bar; Test specimen is laterally clamped and fastened between stiff end fixture and transversal stretching bar; The loading direction of longitudinal bending mechanism is vertical with cross directional stretch mechanism, is positioned at below test specimen and arranges hold-down support, is provided with and presses down expansion link above test specimen; Hold-down support upper end is provided with slideway and coordinates the adjustable slide block of spacing with slideway, and upper end of slide block arranges cylindrical roller and peaks at test specimen lower surface formation fulcrum; Press down expansion link end and be provided with slideway, the identical structure of slide block fit structure, and herein slide block lower end arrange cylindrical roller peak at test specimen lower surface formed pressure point; Horizontal, longitudinal loading can be provided, and according to the adjustable corresponding gaE slide of test specimen upper and lower surface strain numerical value, to reach predetermined load proportion.
Description
Technical field
The utility model relates to material property testing field, in particular to a kind of mechanical property test device that can realize stretching, bending combination loads, the mechanical property test device of the stretching of different proportion, the adopted flat test piece of bending load especially can be obtained with simple charger.
Background technology
For the mechanical property stretching, bend under operating mode acting in conjunction (lower abbreviation stretch bending performance), traditional solution is employing pure extension, pure bending twice test obtains test specimen respectively tensile property and bending property, then predict the stretch bending performance of test specimen.
But because compound substance exists coupling between bending and extension, draws coupling effects such as cutting coupling, the test specimen stretch bending performance therefore making to test separately under specific load ratio is very necessary.Prior art needs twice test, is difficult to carry out on same test specimen, and composite material test piece manufactures dispersiveness comparatively greatly, and prior art is difficult to ensure card precision; If when needing the test specimen stretch bending performance under test different loads ratio, classic method needs many sleeve clamps, and cost is higher simultaneously.
Summary of the invention
The utility model, for above-mentioned technical matters, proposes a kind of mechanical property test device that can realize stretching, bending combination loads, especially can obtain the stretching of different proportion, the mechanical property test device of bending load with simple charger.
For reaching above object, be achieved through the following technical solutions:
The mechanical property test device that different proportion stretches, bending combination loads can be realized, comprising: cross directional stretch mechanism and longitudinal bending mechanism;
Longitudinal bending mechanism comprises: hold-down support and be arranged at and press down expansion link directly over hold-down support;
Hold-down support upper surface is provided with sliding rail I, and sliding rail is provided with is more than or equal to two slider I; Slider I upper surface is provided with detent, and is placed with cylindrical roller in detent;
Press down expansion link retractable ends and be provided with down pressing seat; Down pressing seat lower surface is provided with sliding rail II, and sliding rail II is parallel with sliding rail I;
Sliding rail II is provided with and is more than or equal to two slide blocks II;
Slide block II upper surface is provided with the detent identical with slider I upper surface, and is placed with cylindrical roller equally in the detent of slide block II;
Cross directional stretch mechanism comprises: be arranged at the fixed leg of hold-down support side and the cross directional stretch bar being arranged at hold-down support side relative to fixed leg;
Fixed leg is provided with stiff end piece fixture;
Cross directional stretch bar retractable ends is provided with tensile test specimen fixture;
The telescopic direction of cross directional stretch bar is vertical with the telescopic direction pressing down expansion link.
Wherein, slider I preferred amount is two, and slide block II preferred amount is two;
The central axis pressing down expansion link, cross directional stretch bar and stiff end piece fixture is positioned at same plane.
Adopt the utility model of technique scheme, first test specimen is processed as dull and stereotyped dress, then two ends respectively with stiff end piece fixture and tensile test specimen clamp, now adjust slider I position, with test specimen central axis for reference to being symmetricly set in the both sides of sliding rail I, and the cylindrical roller of suitable diameter size is installed in the detent of slider I, slider I with cylindrical roller peaks at test specimen lower surface or peaks at tensile test specimen fixture lower surface and chuck lower surface respectively, and realizes contour support (ensureing that test specimen is horizontality); Then adjust slide block II position, equally with test specimen central axis for reference to being symmetricly set in the both sides of sliding rail II, slide block II compresses by selecting the cylindrical roller of suitable diameter to fill with the gap of test specimen upper end face; And cylindrical roller on two slide blocks II and the cylindrical roller of two slider I form fulcrum does not overlap that (optimal selection is herein, the cylindrical roller on two slide blocks II and the cylindrical roller of two slider I form point test specimens such as fulcrum.), realizing pressing down bending loading finally by pressing down expansion link, realizing cross directional stretch by cross directional stretch bar and loading.
As preferred structure, tensile test specimen fixture selects releasable clamp, and chuck and pole are for be detachably fixedly connected with;
As preferred structure, stiff end piece fixture comprises: pole and chuck; Pole and fixed leg outer wall hinged fixing; Chuck is fixed on the non-articulated end of pole;
As preferred structure, sliding rail I and sliding rail II adopt dovetail slideway; Slider I and slide block II adopt dovetail slide block.
To sum up, the purpose of this utility model is to provide a kind of mechanical property test device that can realize stretching, bending combination loads, it adopts and stretches and the coefficient mode of four-point bending, adopt cross directional stretch mechanism and longitudinal bending mechanism, make test specimen be subject to the acting in conjunction of tensile load and bending load simultaneously, form a stretch bending loading system.By strain feedback, adjusting slider spacing can realize the stretch bending load of different proportion.According to test and Finite element analysis results, this test unit can reproduce the stretch bending load in engineering structure simply and easily, load moment of flexure owing to have employed four-point bending, make test specimen stage casing be in more uniform stress state, reduce the test error because extending stress band near pressure roller comes.And because test unit has used for reference four-point bending test and tension test, therefore a whole set of test unit can be reequiped by existing fixture, meanwhile, Specimen Shape is simple, convenient manufacture; Test specimen has longer parallel-segment, facilitates electrical measurement or flash ranging, and can regulate according to real-time measurement result, meets loading demand.Load respectively owing to have employed two actuator, therefore can distinguish the course of restrained stretching, bending load loading, the operating mode that substep loading, synchronous loading etc. are different can be realized.
The beneficial effects of the utility model are:
1, test respectively with tradition and stretch, compared with the test of bending property, the utility model makes the stretch bending performance of material can be obtained by single test, and solve classic method to material of measuring and monitoring the growth of standing timber comprise the inaccurate problem of situation of weld seam, defect etc., bending load of the present utility model is loaded by short beam pressure roller, the stress reducing load(ing) point is concentrated, make test specimen stage casing stress distribution even, reduce the possibility that load(ing) point local failure occurs, thus make test result more accurate, contribute to obtaining effective experimental data.
2, test unit described in the utility model simple, be easy to operation, have similarity with the fixture of traditional tension test and four-point bending test, be easy to manufacture or have fixture by transformation obtain.The utility model can realize the stretch bending load working condition of different proportion, the course of restrained stretching, bending load loading respectively, can realize loading or substep loading simultaneously.
3, the scope of application of the present utility model is comparatively wide, is applicable to the sheet material of various square-section.Composite product for manufacture technics such as laying, winding, RTM is all applicable, by selecting the spacing of pressure roller and loading sequence, the magnitude of load of two actuator, for the stretch bending load of the structural simulation particular demands of the different curvature such as pressure vessel, rocket radome fairing, aircraft skin, can also can be used for some metal specimen.
4, Specimen Shape described in the utility model is simple, convenient manufacture; There is longer parallel-segment, facilitate electrical measurement and flash ranging, the validity of result can be ensured.
Above-mentioned explanation is only the general introduction of technical solutions of the utility model, in order to technological means of the present utility model can be better understood, and can be implemented according to the content of instructions, and can become apparent to allow above and other object of the present utility model, feature and advantage, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, be described in detail as follows.
Accompanying drawing explanation
The utility model is totally 1 width accompanying drawing, wherein:
Fig. 1 is side-looking structural representation of the present utility model.
In figure: 1, hold-down support, 2, press down expansion link, 3, sliding rail I, 4, slider I, 5, cylindrical roller, 6, down pressing seat, 7, sliding rail II, 8, slide block II, 9, fixed leg, 10, cross directional stretch bar, 11, stiff end piece fixture, 11.1, pole, 11.2, chuck, 12, tensile test specimen fixture.
Embodiment
The mechanical property test device that realized different proportion as shown in Figure 1 stretches, bending combination loads, comprising: cross directional stretch mechanism and longitudinal bending mechanism;
Longitudinal bending mechanism comprises: hold-down support 1 and be arranged at and press down expansion link 2 directly over hold-down support 1;
Hold-down support 1 upper surface is provided with sliding rail I 3, and sliding rail 3 is provided with is more than or equal to two slider I 4; Slider I 4 upper surface is provided with detent, and is placed with cylindrical roller 5 in detent;
Press down expansion link 2 retractable ends and be provided with down pressing seat 6; Down pressing seat 6 lower surface is provided with sliding rail II 7, and sliding rail II 7 is parallel with sliding rail I 3;
Sliding rail II 7 is provided with and is more than or equal to two slide blocks II 8;
Slide block II 8 upper surface is provided with the detent identical with slider I 4 upper surface, and is placed with cylindrical roller 5 equally in the detent of slide block II 8;
Cross directional stretch mechanism comprises: be arranged at the fixed leg 9 of hold-down support 1 side and the cross directional stretch bar 10 being arranged at hold-down support 1 side relative to fixed leg 9;
Fixed leg 9 is provided with stiff end piece fixture 11;
Cross directional stretch bar 10 retractable ends is provided with tensile test specimen fixture 12;
The telescopic direction of cross directional stretch bar 10 is vertical with the telescopic direction pressing down expansion link 2.
Wherein, slider I 4 preferred amount is two, and slide block II 8 preferred amount is two;
Test specimen xsect is rectangle, and the size of specimen holder end and parallel length is not if identical, and can adopt arc transition, bare terminal end shape should be applicable to stretching clamp, and the active line of the axis Ying Yuli of test specimen overlaps; In test specimen stage casing, upper and lower surface pastes foil gauge respectively, and test specimen laying should adopt symmetric layups;
Locking positioning is carried out by existing slide-and-lock device in the position of slide block II 8 and slider I 4;
The central axis pressing down expansion link 2, cross directional stretch bar 10 and stiff end piece fixture 11 is positioned at same plane.
Adopt the utility model of technique scheme, first test specimen is processed as dull and stereotyped dress, then two ends respectively with stiff end piece fixture 11 and tensile test specimen fixture 12 fastening, now adjust slider I 4 position, with test specimen central axis for reference to being symmetricly set in the both sides of sliding rail I 3, and the cylindrical roller 5 of suitable diameter size is installed in the detent of slider I 4, slider I 4 with cylindrical roller 5 peaks at test specimen lower surface or peaks at tensile test specimen fixture 12 lower surface and chuck 11.2 lower surface respectively, and realize contour support (ensureing that test specimen is horizontality), then adjust slide block II 8 position, equally with test specimen central axis for reference to being symmetricly set in the both sides of sliding rail II 7, slide block II 8 compresses by selecting the cylindrical roller 5 of suitable diameter to fill with the gap of test specimen upper end face, and cylindrical roller 5 on two slide blocks II 8 and the cylindrical roller 5 of two slider I 4 form fulcrum does not overlap that (optimal selection is herein, the cylindrical roller 5 on two slide blocks II 8 and the cylindrical roller 5 of two slider I 4 form fulcrum 4 etc. and divide test specimen.), realizing pressing down bending loading finally by pressing down expansion link 2, realizing cross directional stretch by cross directional stretch bar 10 and loading.
In loading procedure, according to the spacing of test specimen upper and lower surface strain numerical value adjusting slider II and the spacing of slider I, to reach predetermined load proportion.
As preferred structure, tensile test specimen fixture 12 selects releasable clamp, and chuck 11.2 and pole 11.1 are for be detachably fixedly connected with;
As preferred structure, stiff end piece fixture 11 comprises: pole 11.1 and chuck 11.2; Pole 11.1 is hinged fixing with fixed leg 9 outer wall; Chuck 11.2 is fixed on the non-articulated end of pole 11.1;
As preferred structure, sliding rail I 3 and sliding rail II 7 adopt dovetail slideway; Slider I 4 and slide block II 8 adopt dovetail slide block.
The above, it is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, although the utility model discloses as above with preferred embodiment, but and be not used to limit the utility model, any those skilled in the art are not departing within the scope of technical solutions of the utility model, when the technology contents that appeal can be utilized to disclose is made a little change or is modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solutions of the utility model, according to technical spirit of the present utility model to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (4)
1. can realize the mechanical property test device that different proportion stretches, bending combination loads, it is characterized in that: comprise, cross directional stretch mechanism and longitudinal bending mechanism;
Described longitudinal bending mechanism comprises: hold-down support (1) and be arranged at and press down expansion link (2) directly over hold-down support (1);
Described hold-down support (1) upper surface is provided with sliding rail I (3), and sliding rail (3) is provided with is more than or equal to two slider I (4); Described slider I (4) upper surface is provided with detent, and is placed with cylindrical roller (5) in detent;
Described expansion link (2) retractable ends that presses down is provided with down pressing seat (6); Described down pressing seat (6) lower surface is provided with sliding rail II (7), and sliding rail II (7) is parallel with sliding rail I (3);
Described sliding rail II (7) is provided with and is more than or equal to two slide blocks II (8);
Described slide block II (8) upper surface is provided with the detent identical with slider I (4) upper surface, and is placed with cylindrical roller (5) equally in the detent of slide block II (8);
Described cross directional stretch mechanism comprises: the fixed leg (9) being arranged at hold-down support (1) side be arranged at the cross directional stretch bar (10) of hold-down support (1) with fixed leg (9) relative side;
Described fixed leg (9) is provided with stiff end piece fixture (11);
Described cross directional stretch bar (10) retractable ends is provided with tensile test specimen fixture (12);
The telescopic direction of described cross directional stretch bar (10) is vertical with the telescopic direction pressing down expansion link (2).
2. the mechanical property test device realizing different proportion and stretch, bend combination loading according to claim 1, is characterized in that: described stiff end piece fixture (11) comprising: pole (11.1) and chuck (11.2);
Described pole (11.1) is hinged fixing with fixed leg (9) outer wall;
Described chuck (11.2) is fixed on the non-articulated end of pole (11.1).
3. the mechanical property test device realizing different proportion and stretch, bend combination loading according to claim 1, is characterized in that: described sliding rail I (3) and sliding rail II (7) adopt dovetail slideway; Described slider I (4) and slide block II (8) adopt dovetail slide block.
4. according to claim 1ly realize the mechanical property test device that different proportion stretches, bending combination loads, it is characterized in that: described in press down expansion link (2), cross directional stretch bar (10) and stiff end piece fixture (11) central axis be positioned at same plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420872493.3U CN204302093U (en) | 2014-12-31 | 2014-12-31 | The mechanical property test device that different proportion stretches, bending combination loads can be realized |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420872493.3U CN204302093U (en) | 2014-12-31 | 2014-12-31 | The mechanical property test device that different proportion stretches, bending combination loads can be realized |
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| Publication Number | Publication Date |
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| CN204302093U true CN204302093U (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420872493.3U Withdrawn - After Issue CN204302093U (en) | 2014-12-31 | 2014-12-31 | The mechanical property test device that different proportion stretches, bending combination loads can be realized |
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| CN (1) | CN204302093U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104483187A (en) * | 2014-12-31 | 2015-04-01 | 大连理工大学 | Mechanical property testing device capable of realizing stretching and bending combined loading in different proportions |
| CN105136579A (en) * | 2015-08-25 | 2015-12-09 | 中铁十八局集团第四工程有限公司 | Bending-resistant anti-pulling dual-purpose testing table for duct piece and test method thereof |
| CN106124295A (en) * | 2016-06-24 | 2016-11-16 | 潘荣琼 | A kind of durable charger for rigidity test and using method thereof |
| CN107356385A (en) * | 2017-08-23 | 2017-11-17 | 大连理工大学 | A kind of new marine flexible pipeline stretch bending and Subjected To Combined Axial Loading And Bending experimental provision |
| CN107389454A (en) * | 2017-09-04 | 2017-11-24 | 桂林电子科技大学 | A kind of composite rupture test device suitable for various shapes size test specimen |
-
2014
- 2014-12-31 CN CN201420872493.3U patent/CN204302093U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104483187A (en) * | 2014-12-31 | 2015-04-01 | 大连理工大学 | Mechanical property testing device capable of realizing stretching and bending combined loading in different proportions |
| CN105136579A (en) * | 2015-08-25 | 2015-12-09 | 中铁十八局集团第四工程有限公司 | Bending-resistant anti-pulling dual-purpose testing table for duct piece and test method thereof |
| CN106124295A (en) * | 2016-06-24 | 2016-11-16 | 潘荣琼 | A kind of durable charger for rigidity test and using method thereof |
| CN107356385A (en) * | 2017-08-23 | 2017-11-17 | 大连理工大学 | A kind of new marine flexible pipeline stretch bending and Subjected To Combined Axial Loading And Bending experimental provision |
| CN107356385B (en) * | 2017-08-23 | 2023-05-23 | 大连理工大学 | Novel marine flexible pipeline stretch bending and press bending combined experiment device |
| CN107389454A (en) * | 2017-09-04 | 2017-11-24 | 桂林电子科技大学 | A kind of composite rupture test device suitable for various shapes size test specimen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150429 Effective date of abandoning: 20171020 |
|
| AV01 | Patent right actively abandoned |