High-precision simulation and experimental verification of residual stress and surface topography of cylindrical surface shot peening  

作　　者：Jiuyue ZHAO Jinyuan TANG Huaming LIU Huiyun ZHANG Xin LI Han DING 

机构地区：[1]State Key Laboratory of Precision Manufacturing for Extreme Service Performance,Central South University,Changsha 410083,China [2]College of Mechanical and Electrical Engineering,Central South University,Changsha 410083,China

出　　处：《Chinese Journal of Aeronautics》2024年第9期535-559,共25页中国航空学报（英文版）

基　　金：the National Natural Science Foundation of China (No.U22B2086);the National Science and Technology Major Project through (No.2019-VII-0017-0158).

摘　　要：Shot peening is commonly employed for surface deformation strengthening of cylindrical surface part.Therefore,it is critical to understand the effects of shot peening on residual stress and surface topography.Compared to flat surface,cylindrical surface shot peening has two significant features:(i)the curvature of the cylindrical surface and the scattering of the shot stream cause dis-tributed impact velocities;(i)the rotation of the part results in a periodic variation of the impact velocity component.Therefore,it is a challenge to quickly and accurately predict the shot peening residual stress and surface topography of cylindrical surface.This paper developed a high-precision model which considers the more realistic shot peening process.Firstly,a kinematic analysis model was developed to simulate the relative movement of numerous shots and cylindrical surface.Then,the spatial distribution and time-varying impact information was calculated.Subsequently,the impact information was used for finite element modeling to predict residual stress and surface topography.The proposed kinematic analysis method was validated by comparison with the dis-crete element method.Meanwhile,9310 high strength steel rollers shot peening test verified the effectiveness of the model in predicting the residual stress and surface topography.In addition,the effects of air pressure and attack angle on the residual stress and surface topography were investigated.This work could provide a functional package for efficient prediction of the surface integrity and guide industrial application in cylindrical surface shot peening.

关 键 词：Shot peening Cylindrical surface 9310 high strength steel High-precision modeling Residual stress Surface topography 

分 类 号：V261[航空宇航科学与技术—航空宇航制造工程]