覆盖件拉延模工艺补充及压料面的参数化设计新方法

针对基于有限元法的板料成形数值模拟技术已广泛应用于汽车覆盖件制造行业的状况,对快速、自动化的有限元网格建模方法提出迫切要求的现状提出一种新的汽车覆盖件模具冲压工艺设计思路与方法,使用离散三角面片模型,在CAE的前处理软件中进行参数化的工艺补充面和压料面设计,方便进行修改。在完成工艺设计的同时,可自动生成整套模具的网格模型,供有限元仿真分析使用。提供参数化的真实拉深筋的模型建模手段,能够精确模拟拉深筋的形状和拉延过程中拉深筋的力学行为。完成了相关软件STLMesher的开发,大量的算例证明该方法具有较高的精度和较强的工程实用性。

NEW METHOD ON PARAMETRIC DESIGN OF ADDENDUM BINDER SURFACE AND DRAWING PROCESS COMPLEMENTARY FOR AUTOMOTIVE PANEL RAWING DIE

A new method of addendum and binder surface design is proposed. Using this method, the design of addendum surface and binder surface is completed in CAE preprocessor instead of in CAD systems as ordinary methods do. It improves the efficiency of the tool design. After the design is completed, it can automatically produce a clean and connected mesh. This method provides convenient way to model true drawbead and improve the simulation's precision. Many applications have proved this method is suitable for automotive engineering.