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High-speed dynamic compression test device

A technology of dynamic compression and test equipment, applied in the direction of applying stable tension/pressure to test the strength of materials, etc., can solve the problems of unstable equipment, limitation, damage, etc., and achieve the effect of simple structure and low manufacturing cost

Active Publication Date: 2014-12-24
AUTOMOBILE RES INST OF TSINGHUA UNIV IN SUZHOU XIANGCHENG
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The equipment has advanced tensile fixtures, which are currently mainly used for tensile tests of materials. At the same time, the software program of the equipment has the function of impact compression, but it is limited by the hardware of the equipment. If it is directly used for compression tests, it is prone to instability and damage. damage to equipment

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with accompanying drawing of description:

[0027] as attached Figure 1~5 As shown, a high-speed dynamic compression test device is used for a high-speed tensile testing machine, and the high-speed dynamic compression test device includes a mounting table 13 for installing a test piece 14 and a loading mechanism for compressively loading the test piece 14 , the loading mechanism includes a pressing plate 3 for compressing the test piece 14, a pressing rod 3 fixedly connected to the pressing plate 5 at one end, and a connecting rod 1 connected to the other end of the pressing rod 3 through an unloading rod 16, and the connecting rod 1 has a cavity 8 , the other end of the pressing rod 3 is located in the cavity 8 and the extension direction of the pressing rod 3 is the same as that of the connecting rod 1 .

[0028] The unloading rod 16 is arranged through the pressing rod 3 , and the two ends of the ...

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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 [0001] The invention belongs to the field of dynamic testing and characterization of mechanical properties of materials, is used in industries such as automobiles and aviation, and specifically relates to a high-speed dynamic compression test device. Background technique [0002] When a car collides, many automotive materials such as high-strength steel, plastics, and composite materials will suffer from varying degrees of compression deformation, which will lead to material failure and fracture in severe cases. Therefore, it is extremely important to study the dynamic compression properties of automotive materials. At present, the testing instruments for the compressive properties of materials mainly include electronic universal testing machines and drop hammer test benches. Among them, the electronic universal testing machine is mainly suitable for quasi-static or compression tests at low strain rates, and cannot achieve high-speed dynamic compression. Howe...

Claims

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Application Information

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IPC IPC(8): G01N3/08
Inventor 赖兴华黄毅曹家健尹斌王磊夏勇周青
Owner AUTOMOBILE RES INST OF TSINGHUA UNIV IN SUZHOU XIANGCHENG
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