锻压技术

基于COPRA和ABAQUS的P形管辅助设计

英文标题：Aided design of P tubed based on COPRA and ABAQUS

分类号：

出版年,卷(期):页码：2016,41(7):129-136

摘要：

根据P形管的外形要求和冷弯成形的设计思路，应用专业的冷弯成形设计软件COPRA对P形管进行成形工艺设计；建立了符合实际工况的计算模型，并使用COPRA的变形技术模块进行了变形模拟；将板带的应变最大值是否超过材料的应变极限作为判定是否合理的依据，根据变形模拟的结果改进了角度变化量和压缩量的分配方案，并设计了成形轧辊。在此基础上建立了P管成形的几何模型，并应用ABAQUS进行了全流程成形仿真，通过仿真结果的解析对最后道次的成形面进行了回弹角度的补偿。结果表明：计算机辅助设计可以优化成形工艺、预测成形缺陷、提高设计的可靠性。

According to the shape requirements of P tube and design ideas of cold roll forming, the forming technology of P tube was designed by professional design software COPRA．Then, the calculation model under actual working conditions was set up, and a simulated deformation was conducted by the deformation technology module of COPRA．Whether the maximum of sheet strain could exceed the strain limit or not was taken as the basis for determining the rationality. According to the results of the simulation deformation, the allocation scheme of the variable quantity of the angle and the amount of compression was improved, and the forming rolls were designed．On that basis, the geometric model of P tube was established, and the whole forming process was simulated by ABAQUS．By analyzing the simulation results，the springback angle was compensated for the forming surface of the last pass．The results show that the computer aided design technology can optimize the forming process, predict the forming defects and improve the design reliability．

基金项目：

江苏省高等学校大学生创新项目（201511462018H）；江苏省高校品牌专业建设支撑项目（PPZY2015C234）

孙庆东（1979-），男，硕士，讲师

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