金属薄板拉延成形过程的通用计算机模型

建立了全面的金属薄板拉延成形过程塑性各向异性分析计算机通用模型；综合考虑了弯曲、摩擦、压边力、应变强化、板厚变化和模具几何性的影响，能用于动态模拟拉延成形过程；给出成形件应力、应变分布的连续变化曲线。结果表明，全量理论可代替增量理论分析、计算拉延成形过程的力和变形等。还得出弯曲因素的影响程度。

GENERAL COMPUTER MODEL FOR SHEET METAL DEEP-DRAWING PROCESS

A new comprehensive computer model was developed for sheet metal deep-drawing process, based on the theory of plastic anisotropy and under consideration of the effects of bending, blank-holding force, strain-hardening, the variation of thickness and tooling geometry. The model could be used to simulate the deforming stages of deep-drawing process and get the continuous distributions of stress and strain from the radial drawing region of material over a die and the stretch-forming region of material over a punch. It is concluded that the total strain theory can be used as a substitute for the incremental strain theory to analyse the force and deformation in sheet metal deep-drawing process. In addition, the effect of bending was also obtained.