Method for judgingshear forming resistance of material during stamping

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...

AI Technical Summary

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 the stretching conditions such as bulging and drawing, but it cannot directly and effectively judge the material’s safety margin during forming. Safe or not state under shear force

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