Clamping device for preventing compression instability of ultrahigh-strength steel with different thicknesses
A technology of ultra-high-strength steel and clamping device, which is used in measurement devices, strength characteristics, instruments, etc., to achieve the effect of reducing friction, uniform deformation and strain distribution, and small friction
Pending Publication Date: 2020-11-20
HUNAN UNIV +1
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Problems solved by technology
[0007] In order to solve the above-mentioned problems in the prior art, the present invention provides a clamping device for preventing compression instability of ultra-high-strength steels with different thicknesses. To prevent compression instability, solve the problem of friction, and fully ensure the accuracy of sample forming in compression experiments
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[0031] In order to enable those skilled in the art to better understand the technical solutions of the present application, the present invention will be further described in detail below in conjunction with specific embodiments and accompanying drawings.
[0032] The orientation terms such as up, down, left, right, front and rear in this application document are established based on the positional relationship shown in the drawings. If the drawings are different, the corresponding positional relationship may also change accordingly, so this should not be understood as limiting the scope of protection.
[0033] In the present invention, the terms "installation", "connection", "connection", "connection", "fixation" and so on should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated Connection can also be mechanical connection, electrical connection or mutual communication, direct connection or indirect connection...
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Abstract
The invention relates to a clamping device for preventing compression instability of ultrahigh-strength steel with different thicknesses. The clamping device comprises a rapid positioning mechanism, asupporting plate and an elastic element. The rapid positioning mechanism comprises a comb-shaped block, a first clamping block and a second clamping block; the comb-shaped block is composed of two upper comb-shaped blocks and two lower comb-shaped blocks; the upper comb-shaped blocks and the lower comb-shaped blocks are movably connected to the upper end and the lower end of the first clamping block and the upper end and the lower end of the second clamping block respectively through comb-shaped structures; a sample is clamped in the rapid positioning mechanism, and the upper and lower partsof the sample are respectively limited by and fixed to the upper comb-shaped blocks and the lower comb-shaped blocks; the elastic output end of the elastic element abuts against the center of the outer side face of the second clamping block to provide side pressure for the sample; and the upper comb-shaped blocks and the lower comb-shaped blocks relatively move up and down at the upper ends and the lower ends of the first clamping block and the second clamping block along with the length change of the sample. According to the method, the instability of the ultrahigh-strength steel with different thicknesses in a compression experiment can be prevented, the problem of friction force is solved, and the accuracy of the experiment is improved.
Description
technical field [0001] The invention relates to a clamping device for ultra-high-strength steel compression experiments, in particular to a clamping device for preventing compression instability of ultra-high-strength steel with different thicknesses. Background technique [0002] The compression test of the steel plate is used to test the formability of the thin plate when it is reversely loaded. At present, the clamping devices used in the compression test are mostly developed by researchers at home and abroad to solve the forming problems of high-strength steel such as the Bauschinger effect on materials such as springback and failure. It is difficult to satisfy the clamping of ultra-high-strength steel, and it is impossible to prevent the warping phenomenon of ultra-high-strength steel during compression. [0003] At present, there are three main types of clamping devices: [0004] 1. The direct clamping device represented by Shanghai Jiaotong University, which provides...
Claims
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IPC IPC(8): G01N3/04
CPCG01N3/04
Inventor 聂昕曾文彬李汶哲牛星辉申丹凤张杰
Owner HUNAN UNIV