波前法在大型塑性成形有限元模拟中的应用  

Application of Front Method to 3-D FEM Simulation of Large-Scale Plastic Forming Processes

作　　者：唐汉玲[1] 杨合[1] 詹梅[1] 刘郁丽[1] 

机构地区：[1]西北工业大学材料科学与工程系,陕西西安710072

出　　处：《西北工业大学学报》2002年第4期620-624,共5页Journal of Northwestern Polytechnical University

基　　金：国家自然科学基金 (5 9975 0 76 );高等学校优秀青年教师教学科研奖励计划项目

摘　　要：开发了用 FORTRAN语言实现的波前法求解有限元线性化方程组的完整系统 ,并应用在形状复杂的带阻尼台叶片的精锻过程的三维有限元分析中对其进行了考核。结果表明 ,波前法在求解大型线性化方程组方面有着很大的优越性 ;所开发的系统主要适用于塑性加工过程大型三维有限元的高效率、高精度模拟分析。Front method is an efficient method for calculating large coupled linear equations of 3-D FEM. But, to our best knowledge, a complete software package for applying front method to 3-D FEM simulation is still unavailable. We developed such a software package in FORTRAN. Figure 3 shows the schematic diagram of solving coupled linear equations by front method. The software has been used in 3-D FEM numerical simulation of the precision forging process of a blade with a damper platform. Comparisons are made with Gauss method, and the results are given in Table 2. They show that front method is much better than Gauss method in solving larger-scale coupled linear equations. Applications show that our software is suitable for high precision and efficient 3-D FEM simulation of large-scale plastic forming processes.

关 键 词：波前法 线性方程组 有限元模拟 塑性加工 带阻尼台叶片 

分 类 号：TQ320.66[化学工程—合成树脂塑料工业] O24[理学—计算数学]