Method for judgingshear forming resistance of material during stamping

A technology of anti-shear and shear force, which is applied in the direction of testing material strength by applying stable tension/compression, testing material strength by applying stable shear force, and analyzing materials, and can solve the problem of not being able to directly and effectively judge material safety Whether or not the status and other issues, to achieve the effect of low cost, high efficiency, and improve accuracy

Pending Publication Date: 2020-08-28
TANGSHAN IRON & STEEL GROUP +1
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  • Abstract
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  • Application Information

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Problems solved by technology

At present, the commonly used finite element forming simulation software can accurately use the material forming limit diagram FLC to judge the safety margin of the material under

Method used

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  • Method for judgingshear forming resistance of material during stamping
  • Method for judgingshear forming resistance of material during stamping
  • Method for judgingshear forming resistance of material during stamping

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Embodiment Construction

[0019] In order to make the purpose, technical solutions and advantages of the invention implementation cases clearer, the technical solutions in the implementation cases of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the implementation cases. Obviously, the implementation cases described are the present invention Invention of a small part of the implementation cases, not all of the implementation cases, based on the implementation cases in the present invention, all other implementation cases obtained by those of ordinary skill in the art without creative work, all belong to the protection scope of the present invention.

[0020] A method for evaluating the shear forming ability of materials during stamping, comprising the following steps:

[0021] A. Make samples that are fractured by shear force, ensure their accuracy in processing, etc., and use a specific shape to achieve shear tests on a tensile tes...

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Abstract

The invention relates to a method for judging the shear forming resistance of a material during stamping, and belongs to the technical field of methods for testing and judging shear fracture of metalmaterials. The technical scheme of the invention is as follows: the method comprises the following steps: processing and manufacturing a sample, carrying out a shearing test on a plate, processing test data, calculating shearing energy, carrying out forming simulation on a part, deriving a stress-strain curve of a sheared force position, calculating the shearing energy, comparing the shearing energy of the part with the shearing potential energy of the shearing test,and judging whether the part can resist shear deformation and does not crack or not. The invention provides the method for judging the shear forming resistance of the material during stamping, so that the forming simulation accuracy is continuously improved, and the method has the advantages of simplicity in operation, low cost, high efficiency and the like.

Description

technical field [0001] The invention relates to a method for judging the anti-shear forming ability of a material during stamping, and belongs to the technical field of methods for testing and judging shear fracture of metal materials. Background technique [0002] The rapid development of the automobile industry has put forward higher and higher requirements for the efficient and low-cost production of auto parts. In the stamping forming process of auto parts, many positions are not just a simple uniaxial stretching, plane strain or biaxial stretching forming process, but a process from unidirectional stretching to biaxial stretching, Strain to bi-stretch or from bi-stretch to bi-stretch with complex forming processes accompanied by shear strain. At present, the commonly used finite element forming simulation software can accurately use the material forming limit diagram FLC to judge the safety margin of the material under the stretching conditions such as bulging and draw...

Claims

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Application Information

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IPC IPC(8): G01N3/24G01N3/08
CPCG01N3/24G01N3/08G01N2203/0026G01N2203/0067G01N2203/0216G01N2203/0298G01N2203/0676G01N2203/0682Y02P90/30
Inventor 王秋雨孟根巴根夏明生杜雁冰吕浩齐建群张茜张赛娟李立明
Owner TANGSHAN IRON & STEEL GROUP
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