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.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
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)
关键词
激光冲击
数值模拟
冲击坑
表面残余应力
试验
Laser shocking, Numerical simulation, Dent, Surface residual stress, Experiment
