Numerical Simulation and Optimization of Shot Peening Process Parameters

作者：Zhu, Ren-Sheng; Zhao, Hong-Ling^*; Zhao, Han; Zhang, Yue; Peng, Ji-You

来源：Journal of the Chinese Society of Mechanical Engineers, 2018, 39(2): 163-170.

• finite element
• residual stress
• shot peening
• numerical simulation

In this paper, a finite-element (FE) model of shot peening (SP) process is developed for multiple shot impacts on 304 stainless steel sheet by using LS-DYNA code. The model is partially validated by experiments using single shot. Then numerical simulations of multiple shot impacts are performed and the residual stress profiles below the target surface are investigated so that the effects of shot velocity, radius and yield strength of shot material on averaged residual stress profiles are obtained. Finally, the FE model is applied to optimization of SP process parameters by determining the optimal regression equation with the maximum compressive residual stress as function of shot velocity, radius and yield strength by means of stepwise regression analysis. The optimal model proposed is practical for engineers.

• 出版日期2018-4
• 单位合肥工业大学