深杯形件多道次变薄拉深过程数值模拟

Numerical Simulation of Multi-step Ironing Process for Deep Cup Shaped Workpiece

以某典型深杯形件为例,通过零件形状分析确定了最佳的成形方案。然后在Deform3D有限元仿真软件和刚塑性有限元理论基础上,对该深杯形件变薄拉深过程进行了数值模拟。研究了变薄拉深工艺的主要参数(摩擦系数、变形速度)对成形过程的影响。通过分析得到了不同工艺参数与成形载荷和工件损伤之间的关系,这能为深杯形件变薄拉深工艺优化设计提供理论依据。

Taking a deep cup shaped part as an example, the best deformation process plan was determined by analyzing the component shape. Based on the rigid-plastic finite element theory, the ironing process of the deep cup shaped part was simulated by finite element software Deform 3D. The influences of the key parameters （the friction coefficient and the deformation speed） on the ironing process were studied. The relationship between different parameters and the forming load and billet damage was obtained by the analysis. These results can provide a reliable theoretical basis for the optimization of the ironing process of deep cup shaped part.