Transactions of Materials and Heat Treatment

Title：Stamping deformation and springback simulation analysis of sheet metal with shape defects

Authors： LIN Ce1 PENG Yan1 SUN Jian-liang1 DING Kai-rong2

Unit： 1. National Engineering Technology Research Center of Cold Rolling Strip Equipment and Technology Yanshan University Qinhuangdao 066004 China 2. China Heavy Machinery Research Institute Xian 710032 China

KeyWords： shape defect of strip residual stress finite element method deformation springback

ClassificationCode：TG386.3+

year,vol(issue):pagenumber：2012,37(6):174-178

Abstract：

In the actual bending process, if the sheet metal has initial residual stress (shape defects), the residual stress will superimpose with the bending stress and then has some impact on sheet metals stamping deformation and springback. The stamping deformation and springback law under different intial residual stress peak values and thicknesses were researched based on finite element software ABAQUS. The research shows that along width direction of the sheet metal, both stamping deformation and springback at the position of different residual stress are nonuniform, and this nonuniform is increasingly obvious with the increase of the initial residual stress peak value and the decrease of thickness.

Funds：

国家科技支撑计划资助项目（2011BAF15B01）；河北省杰出青年科学基金资助项目（E2011203002）

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