CN104237014A - High-speed dynamic compression test device - Google Patents
High-speed dynamic compression test device Download PDFInfo
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- CN104237014A CN104237014A CN201410550001.3A CN201410550001A CN104237014A CN 104237014 A CN104237014 A CN 104237014A CN 201410550001 A CN201410550001 A CN 201410550001A CN 104237014 A CN104237014 A CN 104237014A
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Abstract
The invention relates to a high-speed dynamic compression test device. The high-speed dynamic compression test device comprises an installation table used for installing a test piece and a loading mechanism used for carrying out compression lading on the test piece, wherein the loading mechanism comprises a press plate used for compressing the test piece and a press rod fixedly connected with the press plate; in particular, the loading mechanism further comprises an unloading rod and a connection rod connected with the other end of the press rod; the connection rod is provided with a cavity; the other end of the press rod is located in the cavity and the extension direction of the press rod is the same as that of the connection rod. The high-speed dynamic compression test device disclosed by the invention is capable of being directly applied to a high-speed tensile tester, realizing high-speed dynamic compression, keeping constant-speed loading, and realizing constant-speed compression loading under loading with low, medium and high strain rates, as well as is safe and reliable.
Description
Technical field
The invention belongs to material mechanical performance dynamic test and representational field, for the industry such as automobile, aviation, be specifically related to a kind of high speed dynamic compressive test device.
Background technology
When automobile collides, many vehicle materials such as high-strength steel, plastics, compound substance etc. all can suffer compression deformation in various degree, and can cause inefficacy and the fracture of material time serious, the Dynamic compressive property therefore studying vehicle material is very important.At present, the testing tool of Material compression performance mainly contains electronic universal tester and drop hammer test platform.Wherein, electronic universal tester is mainly applicable to quasistatic or compared with the compression test under low strain dynamic rate, cannot realize high speed dynamic compression, but for materials such as high-strength steel, plastics, foams, we pay close attention to the mechanical characteristic of material under middle and high rate of strain (1 ~ 1000/s) loads more; Drop-weight test platform can realize high speed dynamic compression, can meet specific contact velocity requirement, but will change at loading procedure medium velocity, and namely non-constant velocity loads, and there is energy loss in impact process.
High speed tensile test machine is mainly used in the mechanical property of test metal, compound substance, plastic or other material and parts under the effect of high strain rate load, the fields such as new material research and development, Aero-Space and automobile are widely used in, as the material parameter of measured automobiles high strength steel plate under high strain-rate.This equipment has advanced stretching clamp, is mainly used as the tension test of material at present, has the function of impact compress simultaneously, but be limited to device hardware in this device software program, if the compression test of being directly used in, easily produces unstability and causes damage to equipment.
Summary of the invention
Technical matters to be solved by this invention overcomes the deficiencies in the prior art, a kind of high speed dynamic compressive test device on high speed tensile test machine is provided, this high speed dynamic compressive test device can be used in realizing basic, normal, high different strain rate load under constant speed compression-loaded, safe and reliable.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
High speed dynamic compressive test device, comprise the erecting bed for installing test specimen and the load maintainer for carrying out compression-loaded to described test specimen, described load maintainer comprises the depression bar that pressing plate for compressing described test specimen and one end are fixedly connected with described pressing plate, described load maintainer also comprises the connecting link be connected with the other end of described depression bar by discharge arm, described connecting link has cavity, and the other end of described depression bar is positioned at described cavity and the bearing of trend of described depression bar is identical with the bearing of trend of described connecting link.
Described discharge arm is arranged through described depression bar, and the both ends of described discharge arm are each passed through the corresponding two side of described connecting link and extend to outside described connecting link.
The both ends of described discharge arm are fixedly connected with described connecting link respectively by securing member.
The bearing of trend of described discharge arm is perpendicular to the bearing of trend of described connecting link.
Position between the madial wall at described connecting link of described discharge arm and described depression bar offers multiple breach.
Multiple described breach is symmetrically distributed in the symmetrical two side faces of described discharge arm.
Be filled with cushioned material layer in described cavity, the one side of described cushioned material layer contacts with the other end of described depression bar, and another side contacts with described connecting link.
Sealing ring is provided with between described depression bar and described connecting link.
Described high speed dynamic compressive test device also comprises guiding mechanism, described guiding mechanism comprises the supporting seat being fixedly installed on described erecting bed side, the guide rod be fixedly connected with described supporting seat and is slidably arranged in the sliding sleeve on described guide rod along the length direction of described guide rod, described load maintainer also comprises the web joint be fixedly connected between described depression bar and described pressing plate, and the sidepiece of described web joint is fixedly connected with described sliding sleeve.
Described guiding mechanism is provided with 2, and 2 described guiding mechanisms are symmetricly set on two sides of described erecting bed, and the both sides of described web joint are fixedly connected with the described sliding sleeve of both sides respectively.
Due to the enforcement of above technical scheme, the present invention compared with prior art has following advantages:
High speed dynamic compressive test device of the present invention has discharge arm, by discharge arm is designed to difformity and size, can realize the unloading experiment of different specified force value.
High speed dynamic compressive test device of the present invention can realize high speed dynamic compression, keeps constant speed to load, and can realize the compression-loaded test under basic, normal, high different strain rate.
High speed dynamic compressive test apparatus structure of the present invention is relatively simple, and manufacturing cost is lower, safe and reliable.
Accompanying drawing explanation
Fig. 1 is the stereographic map of high speed dynamic compressive test device of the present invention;
Fig. 2 is that the A-A of connecting link and depression bar junction in Fig. 1 is to cut-open view;
Fig. 3 is the side view of high speed dynamic compressive test device of the present invention;
Fig. 4 is the stereographic map of the discharge arm of high speed dynamic compressive test device of the present invention;
Fig. 5 is the side view of the discharge arm of high speed dynamic compressive test device of the present invention;
In figure: 1, connecting link; 2, securing member; 3, depression bar; 4, web joint; 5, pressing plate; 6, sliding sleeve; 7, guide rod; 8, cavity; 9, supporting seat; 10, high speed tensile test machine testing table; 11, sensor base; 12, sensor; 13, erecting bed; 14, test specimen; 15, cushioned material layer; 16, discharge arm; 17, sealing ring; 18, T-slot; 19, breach.
Embodiment
Below in conjunction with Figure of description, the present invention is described further:
As shown in accompanying drawing 1 ~ 5, a kind of high speed dynamic compressive test device, for high speed tensile test machine, this high speed dynamic compressive test device comprises the erecting bed 13 for installing test specimen 14 and the load maintainer for carrying out compression-loaded to test specimen 14, this load maintainer comprises the depression bar 3 be fixedly connected with for the pressing plate 3 of compression specimens 14, one end and pressing plate 5 and the connecting link 1 be connected with the other end of depression bar 3 by discharge arm 16, connecting link 1 has cavity 8, and the other end of depression bar 3 is positioned at cavity 8 and the bearing of trend of depression bar 3 is identical with the bearing of trend of connecting link 1.
Discharge arm 16 is arranged through depression bar 3, and the both ends of discharge arm 16 are each passed through the corresponding two side of connecting link 1 and extend to outside connecting link 1.The both ends of discharge arm 16 are fixedly connected with connecting link 1 respectively by securing member 2, and securing member 2 is bolt.
The bearing of trend of discharge arm 16 is perpendicular to the bearing of trend of connecting link 1.
Position between the madial wall at connecting link 1 of discharge arm 16 and depression bar 3 offers multiple breach 19, and the size of breach 19 and the depth can adjust as required.Particularly, breach 19 symmetry can offer 4, and 4 breach 19 are symmetricly set on the two ends of discharge arm 16 and the relative two side faces of respective end respectively.
Be filled with cushioned material layer 15 in the cavity 8 of connecting link 1, the one side of cushioned material layer 15 contacts with the other end of depression bar 3, and another side contacts with connecting link 1.
In order to make depression bar 3 can not rock in the cavity 8 of connecting link 1, between depression bar 3 and the inwall of connecting link 1, be provided with sealing ring 17.
High speed dynamic compressive test device of the present invention also comprises guiding mechanism, the sliding sleeve 6 that guiding mechanism comprises the supporting seat 9 being fixedly installed on erecting bed 13 side, the guide rod 7 be fixedly connected with supporting seat 9 and is slidably arranged in along the length direction of guide rod 7 on guide rod 7, load maintainer also comprises the web joint 4 be fixedly connected between depression bar 3 and pressing plate 5, and the sidepiece of web joint 4 is fixedly connected with sliding sleeve 6.
Particularly, guiding mechanism is provided with 2, and 2 guiding mechanisms are symmetricly set on two sides of erecting bed 13, and the both sides of web joint 4 are fixedly connected with the sliding sleeve 6 of both sides respectively.
Principle of work of the present invention:
High speed tensile test machine testing table 10 has been bolted to connection sensor base 11, sensor base 11 has been provided with the sensor 12 for dynamometry, side is provided with erecting bed 13 on the sensor 12, erecting bed 13 is placed test test specimen 14; The supporting seat 9 of guiding mechanism to be fixed with the T-slot 18 on high speed tensile test machine testing table 10 by bolt and to be connected, and guiding mechanism is positioned at relative two sides of erecting bed 13, has wider test specification and measures the visual field; The connecting link 1 of compression test device is connected by screw thread with high speed tensile test machine.
After on-test, connecting link 1 is moved by the length direction of sliding sleeve 6 along guide rod 7 with dynamic pressure plate 5, test specimen 14 pressurized, sensor 12 dynamometry, test normal termination; If test force exceedes discharge arm 16 ratings, discharge arm 16 ruptures, and connecting link 1 and depression bar 3 produce relative motion, and depression bar 3 extrudes cushioned material layer 15, plays the effect absorbing dump energy, protection test equipment, off-test.
In process of the test, use non-contact measurement method can measure the compression deformation of test; The piezoelectric crystal force snesor dynamometry that can directly use high speed tensile test machine to carry under low strain dynamic rate loads; In middle and high rate of strain load test operating mode, paster force snesor dynamometry can be used.
Above to invention has been detailed description; its object is to allow the personage being familiar with this art can understand content of the present invention and be implemented; can not limit the scope of the invention with this; the equivalence change that all Spirit Essences according to the present invention are done or modification, all should be encompassed in protection scope of the present invention.
Claims (10)
1. a high speed dynamic compressive test device, comprise the erecting bed for installing test specimen and the load maintainer for carrying out compression-loaded to described test specimen, described load maintainer comprises the depression bar that pressing plate for compressing described test specimen and one end are fixedly connected with described pressing plate, it is characterized in that: described load maintainer also comprises the connecting link be connected with the other end of described depression bar by discharge arm, described connecting link has cavity, and the other end of described depression bar is positioned at described cavity and the bearing of trend of described depression bar is identical with the bearing of trend of described connecting link.
2. high speed dynamic compressive test device according to claim 1, is characterized in that: described discharge arm is arranged through described depression bar, and the both ends of described discharge arm are each passed through the corresponding two side of described connecting link and extend to outside described connecting link.
3. high speed dynamic compressive test device according to claim 2, is characterized in that: the both ends of described discharge arm are fixedly connected with described connecting link respectively by securing member.
4. high speed dynamic compressive test device according to claim 2, is characterized in that: the bearing of trend of described discharge arm is perpendicular to the bearing of trend of described connecting link.
5. high speed dynamic compressive test device according to claim 2, is characterized in that: the position between the madial wall at described connecting link of described discharge arm and described depression bar offers multiple breach.
6. high speed dynamic compressive test device according to claim 5, is characterized in that: multiple described breach is symmetrically distributed in the symmetrical two side faces of described discharge arm.
7. high speed dynamic compressive test device according to claim 1, is characterized in that: be filled with cushioned material layer in described cavity, and the one side of described cushioned material layer contacts with the other end of described depression bar, and another side contacts with described connecting link.
8. high speed dynamic compressive test device according to claim 1, is characterized in that: be provided with sealing ring between described depression bar and described connecting link.
9. high speed dynamic compressive test device according to claim 1, it is characterized in that: described high speed dynamic compressive test device also comprises guiding mechanism, described guiding mechanism comprises the supporting seat being fixedly installed on described erecting bed side, the guide rod be fixedly connected with described supporting seat and is slidably arranged in the sliding sleeve on described guide rod along the length direction of described guide rod, described load maintainer also comprises the web joint be fixedly connected between described depression bar and described pressing plate, and the sidepiece of described web joint is fixedly connected with described sliding sleeve.
10. high speed dynamic compressive test device according to claim 9, it is characterized in that: described guiding mechanism is provided with 2,2 described guiding mechanisms are symmetricly set on two sides of described erecting bed, and the both sides of described web joint are fixedly connected with the described sliding sleeve of both sides respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410550001.3A CN104237014B (en) | 2014-10-17 | 2014-10-17 | High-speed dynamic compression test device |
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| CN201410550001.3A CN104237014B (en) | 2014-10-17 | 2014-10-17 | High-speed dynamic compression test device |
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| CN104237014A true CN104237014A (en) | 2014-12-24 |
| CN104237014B CN104237014B (en) | 2017-02-15 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105445125A (en) * | 2016-01-18 | 2016-03-30 | 苏州达美特汽车测试技术有限公司 | High-speed tensile testing machine-based part impulse test apparatus and method |
| CN106706425A (en) * | 2016-11-29 | 2017-05-24 | 苏州达美特汽车测试技术有限公司 | High-speed compression testing device |
| CN106872273A (en) * | 2017-02-24 | 2017-06-20 | 中国农业大学 | A kind of single shaft open type compression experimental rig and method |
| CN107843497A (en) * | 2017-12-15 | 2018-03-27 | 防城港市金沙海洋科技有限责任公司 | A kind of resistance to compression degree detection device for auto-parts |
| CN109323935A (en) * | 2018-11-23 | 2019-02-12 | 中国汽车技术研究中心有限公司 | A kind of protective device and impact device of impact device load transducer |
| CN110095342A (en) * | 2019-05-29 | 2019-08-06 | 西安建筑科技大学 | A kind of measuring device and measuring method of metal blank resistance of deformation |
| CN111398039A (en) * | 2020-04-30 | 2020-07-10 | 中国飞机强度研究所 | Device and method for testing mechanical properties of seat cushion material under different strain rates |
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| US5932811A (en) * | 1998-06-16 | 1999-08-03 | Comten Industries, Inc. | Portable foam compression tester |
| CN201277925Y (en) * | 2008-10-30 | 2009-07-22 | 河北理工大学 | Concrete stress-strain full curve test apparatus with loading speed controllable |
| CN102607955A (en) * | 2012-02-17 | 2012-07-25 | 中国地质大学（武汉） | Biaxial compression test device for fractured rock mass |
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| CN103528890A (en) * | 2013-11-08 | 2014-01-22 | 清华大学苏州汽车研究院（相城） | Stretching and unloading testing device |
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2014
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US5932811A (en) * | 1998-06-16 | 1999-08-03 | Comten Industries, Inc. | Portable foam compression tester |
| CN201277925Y (en) * | 2008-10-30 | 2009-07-22 | 河北理工大学 | Concrete stress-strain full curve test apparatus with loading speed controllable |
| CN102607955A (en) * | 2012-02-17 | 2012-07-25 | 中国地质大学（武汉） | Biaxial compression test device for fractured rock mass |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445125A (en) * | 2016-01-18 | 2016-03-30 | 苏州达美特汽车测试技术有限公司 | High-speed tensile testing machine-based part impulse test apparatus and method |
| CN106706425A (en) * | 2016-11-29 | 2017-05-24 | 苏州达美特汽车测试技术有限公司 | High-speed compression testing device |
| CN106706425B (en) * | 2016-11-29 | 2024-06-11 | 苏州达美特汽车测试技术有限公司 | High-speed compression test device |
| CN106872273A (en) * | 2017-02-24 | 2017-06-20 | 中国农业大学 | A kind of single shaft open type compression experimental rig and method |
| CN107843497A (en) * | 2017-12-15 | 2018-03-27 | 防城港市金沙海洋科技有限责任公司 | A kind of resistance to compression degree detection device for auto-parts |
| CN109323935A (en) * | 2018-11-23 | 2019-02-12 | 中国汽车技术研究中心有限公司 | A kind of protective device and impact device of impact device load transducer |
| CN110095342A (en) * | 2019-05-29 | 2019-08-06 | 西安建筑科技大学 | A kind of measuring device and measuring method of metal blank resistance of deformation |
| CN111398039A (en) * | 2020-04-30 | 2020-07-10 | 中国飞机强度研究所 | Device and method for testing mechanical properties of seat cushion material under different strain rates |
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| CN104237014B (en) | 2017-02-15 |
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