Finite element simulations of sheet metal forming under complex strain paths

2007年第2卷第4期

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《机械工程前沿（英文）》 >> 2007年第2卷第4期 doi: 10.1007/s11465-007-0069-8

Finite element simulations of sheet metal forming under complex strain paths

College of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China;

发布日期： 2007-12-05

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摘要

Fracture is a common defect in sheet metal forming and it is essentially caused by tensile instability. This paper analyzes some experiments and theories for building forming limit diagrams of sheet metal and points out the advantages and disadvantages of current experiments and theories. According to this, a method that integrates the finite element simulation and experiment was used to research the forming limit diagrams of the sheet metal under complex strain paths. Taking the rear hanger that undergoes twice stamping as an example, the strain paths of the dangerous point of the rear hanger is investigated. Finally, the forming method of the rear hanger is confirmed. Results indicate that finite element method (FEM) can achieve the complex strain paths and different strain paths will have great impacts on the result of the sheet metal forming.

关键词

dangerous ; forming method ; different ; hanger ; forming