考虑材料参数的刚粘塑性有限元初始速度场自动生成方法  

GENERATION OF THE INITIAL VELOCITY FIELD FOR RIGIDPLASTIC FEM CONSIDERING MATERIAL EXPONENT EFFECTS

作　　者：傅沛福[1] 王忠金 李运兴[1] 胡平[1] 张吉恒 

机构地区：[1]吉林工业大学

出　　处：《塑性工程学报》1995年第4期12-17,共6页Journal of Plasticity Engineering

摘　　要：本文采用一种包含材料硬化指数ｎ和速率敏感性指数ｍ的刚粘塑性有限元模型，阶段硬化处理考虑到等效应力公与应变率有关，依据线粘性材料假设，提出了考虑材料参数ｎ、ｍ影响的刚粘塑性有限元初始速度场自动生成方法，改进了文献［３］方法。数值模拟结果与有关文献的计算和实验结果进行了比较，表明本文方法是有效的。In this paper, the rigid- plastic FEM considering material hardening exponent n and the strain--rate sensitivity exponent m is adopted. The assumption of linear viscous material is introduced. The generation method of the initial velocity field considering material exponent n and m effects is developed. The comparison between Computed results and references' ones show that the method developed by the author is reasonable.

关 键 词：刚粘塑性有限元 初始速度场 材料参数 金属成形 

分 类 号：TG301[金属学及工艺—金属压力加工]