板坯轧制的刚粘塑性有限元分析  

SIMULATION OF SLAB ROLLING PROCESS WITH RIGID VISCO-PLASTIC FINITE ELEMENT METHOD

作　　者：张晓明[1] 姜正义[1] 刘相华[1] 王国栋[1] 

机构地区：[1]东北大学轧制技术及连轧自动化国家重点实验室,沈阳110006

出　　处：《塑性工程学报》2001年第3期71-76,共6页Journal of Plasticity Engineering

基　　金：国家教委霍英东青年教师基金项目

摘　　要：作者将变位的不完全乔里斯基分解刚度矩阵和共轭梯度法相结合 ,即变位的不完全乔里斯基分解和共轭梯度法 (shiftedICCG法 ) ,求解速度增量方程 ,进而对板坯轧制过程进行刚粘塑性有限元分析。并对该算法的迭代次数、变位参数 ψ进行了检测 ,同时对工艺参数的模拟结果进行了分析。The presented paper combined the Shifted Incomplete Cholesky decomposition of the stiffness matrix with Conjugate Gradient method for the solution of the equations of velocity increment. This technique, termed the shifted ICCG method, is then employed in the rigid visco-plastic finite element method to solve the slab-rolling problem. The number of iterations, shifted parameter ψ and the results of simulation for process parameters have been analyzed. The efficiency and stability of the shifted ICCG method in the analysis of slab rolling was verified.

关 键 词：三维刚粘塑性有限元 变位 不完全乔里斯基分解 共轭梯度法 板坯轧制 

分 类 号：TG335.5[金属学及工艺—金属压力加工]