激光冲击强化2024-T3铝合金的数值模拟与试验  

Numerical Simulation and Experimental Investigation on Laser Shock Processing

作　　者：张兴权[1] 张永康[2] 顾永玉[2] 周建忠[2] 

机构地区：[1]安徽工业大学机械工程学院 [2]江苏大学机械工程学院

出　　处：《农业机械学报》2007年第12期181-184,共4页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金资助项目(项目编号:50475127;50275068)

摘　　要：表面冲击坑深度和残余应力大小是评价激光冲击强化效果的两个重要指标。采用数值模拟软件对激光冲击强化2024-T3铝合金进行了数值模拟,对模拟过程中的关键技术问题进行了处理,建立了有限元分析模型,并进行了试验验证。数值模拟的冲击坑深度和试验值相差为5.78%,模拟的表面残余压应力的最大值与试验所得的数值偏差为2.7%。The magnitude of residual stress and the depth of dent are two important factors to assess the effect of laser shocking. They were simulated by numerical analysis software. During the simulation, the key technology was solved and the mathematical model was established. The experiment was also carried out to test the results of simulation. The simulation results were well agreed with the experimental results. The deviation of the depth of dents between calculated results and experimental data is 5.78%, and the magnitude of simulation of residual stresses is 2.7%, which indicated that the numerical simulation could play a directional role in optimizing parameters to improve effect of laser shock processing.

关 键 词：激光冲击 数值模拟 冲击坑 表面残余应力 试验 

分 类 号：TN249[电子电信—物理电子学] TG665[金属学及工艺—金属切削加工及机床]