环件冷辗扩并行模拟  

Parallel Simulation of Cold Ring Rolling Process

作　　者：张学宾[1,2] 张彦敏[1] 李志刚[2] 

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471039 [2]华中科技大学材料成形与模具技术国家重点实验室

出　　处：《矿山机械》2008年第24期92-95,共4页Mining & Processing Equipment

基　　金：国家自然科学基金重点项目(50335060);河南科技大学青年基金(2004ZY032)

摘　　要：对冷辗扩弹塑性专用有限元分析程序 RingForm 进行了并行化,研究了冷辗扩动力显式算法的程序结构,使用 Intel 线程测试工具分析程序中热点,改造串行程序,消除数据依赖性,对程序进行了并行化和向量化。为了检验并行程序的计算效率和准确度,模拟了矩形截面环件冷辗扩成形过程。结果显示,并行加速比可达1.9,结果准确与通用软件 Abaqus 比较,RingForm 并行求解器计算效率可提高63.5%。RingForrn, an elastic-plastic dynamic： FEM program, has been deserialized. Thepaper studies the program construction of cold ring rolling dynamic explicit method. Using the Intel thread analysis tools, the program hotspots are analyzed. Data dependence is eliminated by modifying the serial program and the program is deserialized and vectorized. In order to examine the simulation efficiency and precision of the program, a rectangular cold ring rolling process has been simulated. The results show that the accelerator is reached to 1.9 and the results are preci.ve. Compared with the common software Abaqus, simulation efficiency of RingForm deserialized solver increases by 63.5%.

关 键 词：冷辗扩 模拟系统 OPENMP 加速比 

分 类 号：TG301[金属学及工艺—金属压力加工] TP391.9[自动化与计算机技术—计算机应用技术]