超声喷丸强化产生残余应力的有限元分析

Finite Element Analysis of Residual Stress Produced by Ultrasonic Shot-peening

将超声喷丸过程简化为单个丸粒撞击试件的模型,应用ANASYS/LS-DYNA软件对过程进行有限元仿真。分析了残余应力产生过程,并改变丸粒的直径和材料,对比不同丸粒直径及材料下的残余应力分布,得出的结论是:丸粒直径增大可以使残余应力层深度和最大残余压应力值增加,丸粒密度增大也可以实现最大残余压应力值增加。

The ultrasonic shot-peening process is simplified as a single shot projected on a sample,and is simulated based on ANASYS/LS-DYNA software.The development of residual stress is analyzed,and the stress distributions acquired at different shot diameter and material are compared,and the results show that the depth of the stress layer and the residual stress value increase with the rising of shot diameter,and the rising of shot density also can increase the residual stress value.