Biaxial tension test device for testing performance of sheet metal

A test device and biaxial stretching technology, applied in the direction of measuring devices, optical devices, and analyzing materials, can solve the problems of inability to realize the strain state, complex structure of the device, and limited application, and achieve simple structure, wide application range, and ease of use. The effect of maintenance

Inactive Publication Date: 2012-10-03
HENAN POLYTECHNIC UNIV
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Problems solved by technology

This method is the choice of most researchers, but it cannot achieve different strain states by loading with different ratios
[0007] The second type mainly uses independent drive systems for bidirectional tensile tests, which can achieve different strain states under different load ratios, but the complex structure and high cost of the device limit the application of this method

Method used

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  • Biaxial tension test device for testing performance of sheet metal

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Embodiment Construction

[0023] Such as figure 1 As shown, the bidirectional tensile test device for testing the properties of sheet metal provided by the present invention is composed of an upper connection structure, a lower connection structure, a proportional adjustment mechanism, a clamp slider mechanism and a connecting rod; the upper connection mechanism From top to bottom is an upper plate 1, four upper plate connection studs 3 and a chassis 4, the four upper plate connection studs 3 are fixedly connected to the chassis 4 and the upper plate 1; the lower connection From bottom to top, the mechanism is composed of four lower plate connecting studs 7 fixed on the lower plate 6 by the lower plate 6, the lower plate 6 is located below the chassis 4, and the four lower plate connecting studs 7 are fixed through the chassis 6 Connect the proportional adjustment mechanism, the proportional adjustment mechanism is located between the upper plate 1 and the chassis 4, and the rods of the four lower plat...

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Abstract

The invention discloses a biaxial tension test device for testing the performance of sheet metal. The biaxial tension test device comprises an upper connecting structure, a lower connecting structure, a proportion adjusting mechanism, a fixture slide block mechanism and connecting rods. The biaxial tension test device with a simple pure mechanical structure is easy to maintain and mount, requires a relatively low cost and can effectively achieve a biaxial tension goal; besides, the loading proportion in two mutually vertical directions is convenient to adjust, and each connecting bolt can be adjusted to be horizontal with a chassis, so as to guarantee that specimens are in horizontal positions; and the biaxial tension test device has relatively high test accuracy and can effectively control failure time of the specimens.

Description

technical field [0001] The invention relates to a bidirectional tensile test device, in particular to a bidirectional tensile test device for testing the properties of metal plates; the test device can perform a bidirectional tensile test on cross-shaped test pieces of metal plates with different plate thicknesses. Background technique [0002] With the development of automobile lightweight, new materials such as high-strength steel, aluminum alloy sheets and new technologies such as tailor-welded blanks have been more and more widely used in automobile body manufacturing, but for these new materials and tailor-welded blanks, etc. Formability research mainly adopts uniaxial tensile test and bulging test. In most cases, the body parts are complex, and the deformation rules of the sheet metal during the forming process are diverse. It is far from enough to determine the formability of the sheet metal by simple deformation tests such as uniaxial tension and bulging tests. The ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/00G01N3/02G01B11/16
Inventor 陈水生陈国强牛振华赵伟丽董玉杰
Owner HENAN POLYTECHNIC UNIV
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