关键词: 挤压, 数值模拟, 塑性流动理论, 20-sim , 动力学模型, 混联机器人, 冗余驱动, 旋量键合图

Abstract: In this paper, the process of simulating deformation force and metal flow of forming process using UBET is stated and the basic equation are developed. According to Minimum Upper Bound Power Principle, the deformation force, and metal flow in cup-rod compound extrusion for different parameters, such as forward/backward reduction rate and conical angle are simulated using UBET. The deformation models and formula for calculating flow-out quantities to two exits are also given. Through the comparision of theoretical results with experiments, the theoretical prediction is very close to the practical observation

Key words: 挤压, 数值模拟, 塑性流动理论, 20-sim , Dynamic modeling, Hybrid robot, Redundant actuation, Screw bond graph