基于有限元模拟的激光喷丸成形正交优化设计  

Orthogonal optimum design of laser peen forming based on finite element simulation

作　　者：曹向广[1] 周建忠[1] 袁国定[1] 杜建钧[1] 倪敏雄[1] 

机构地区：[1]江苏大学机械工程学院,镇江212013

出　　处：《激光技术》2007年第6期656-658,662,共4页Laser Technology

基　　金：国家自然科学基金资助项目(50475127)

摘　　要：影响激光喷丸成形中板料最终成形形状的工艺参数众多,为了达到需要的板料变形量及残余压应力层深度,必须对各工艺参数进行优化控制。利用正交表设计了主要的激光器和板料参数,并用ANSYS/LS-DYNA模拟了全部情况。采用极差法对数值计算结果进行分析,得到了各因素的主次关系以及较优的参数水平组合。结果表明,利用正交法对激光喷丸成形工艺参数进行优化设计可以有效控制残余应力形态,从而控制板料变形,对试验具有重要的指导意义。The process parameters in laser peen forming （LPF） have great impact on the forming shape of the processed metal sheet. In order to gain desired deformation volume and certain deep of residual stress, it is essential to optimize and control these parameters. In this paper,the orthogonal layout was used to design the main parameters of laser and the sheet. And all the situation was simulated by the ANSYS/LS-DYNA. The numeral result was studied by range analysis method. It was indicated that the optimum design of the parameters in laser peening process by orthogonal method can effectively control the residual stress modality and constructively conduct the experiments.

关 键 词：激光技术 参数优化 正交法 激光喷丸成形 

分 类 号：TN249[电子电信—物理电子学] TG386[金属学及工艺—金属压力加工]