【摘要】 针对薄板冲压成型中起皱这一常见的材料失效形式 ,借助于计算机仿真技术 ,利用板料压缩失稳理论和有限元计算方法 ,搜寻并计算得到反映板料各处发生起皱难易程度的屈曲临界因子 ,生成起皱云图来观察材料各部分的稳定状态 ,预测可能出现起皱的部位 ,为修改冲压工艺和修模提供依据 ,通过分析起皱云图得出的结论与实验结果非常接近。更多还原

【Abstract】 Based on the sheet stable theory, applying the technology of computer simulation and finite element method, the buckling cloud figures are generated to observe the stability of each part of the sheet and predict the possible buckling zones. The forming process and model modification can be easily improved using this method. The conclusion drawn from the buckling cloud figures is very close to the test result, which is of great practical interest.更多还原