基于Forge的止动片冷锻冲裁成形数值仿真

Numerical Simulation of Cold Forging Blanking Forming of Retaining Sheet Based on Forge

针对有孔较厚板材的成形问题,结合冷锻及冲裁工艺特点得到了某型止动片有孔板材冷锻冲裁成形工艺,分析了其冷锻冲裁成形原理。运用仿真软件Forge建立了止动片冷锻冲裁成形数值仿真模型,对其在不同冷锻冲裁时间下的等效应力、等效应变和应变能变化规律以及成形损伤特性进行了研究。结果表明:止动片在不同冷锻冲裁时间下,其等效应力、等效应变及应变能分布区域存在差异,但等效应力、等效应变及应变能变化趋势基本一致,最大值都出现在冲裁孔边缘。

Aiming at the forming problem of thick sheet with holes,combined with the characteristics of cold forging and blanking process,the cold forging blanking forming process of a type of retaining sheet with holes was obtained.The cold forging blanking forming principle was analyzed.The numerical simulation model of cold forging blanking forming was established by using the simulation software Forge.The changes of equivalent stress,equivalent strain and strain energy,and forming damage characteristics at different cold forging blanking time were studied.The results show that the distribution of equivalent stress,equivalent strain and strain energy are different at different cold forging blanking time,but the change trend of equivalent stress,equivalent strain and strain energy is basically the same,and the maximum value appears at the edge of blanking hole.