Shot Peening Numerical Simulation of Aircraft Aluminum Alloy Structure

2017 International Symposium on Application of Materials Science and Energy Materials

材料科学;能源学

Liu, Yong^1,2 ; Lv, Sheng-Li^1,2 ; Zhang, Wei^1,2

National Key Laboratory of Science and Technology on UAV, Northwestern Polytechnical University, Xi'an, China^1

School of Aeronautics, Northwestern Polytechnical University, Xi'an, China^2

关键词: 7050 aluminum alloy;    Aluminum alloy structures;    Collision time;    Collision velocity;    Kriging model;    Stress corrosion;    Target materials;    Time interval;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/322/3/032003/pdf
DOI  :  10.1088/1757-899X/322/3/032003

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

After shot peening, the 7050 aluminum alloy has good anti-fatigue and anti-stress corrosion properties. In the shot peening process, the pellet collides with target material randomly, and generated residual stress distribution on the target material surface, which has great significance to improve material property. In this paper, a simplified numerical simulation model of shot peening was established. The influence of pellet collision velocity, pellet collision position and pellet collision time interval on the residual stress of shot peening was studied, which is simulated by the ANSYS/LS-DYNA software. The analysis results show that different velocity, different positions and different time intervals have great influence on the residual stress after shot peening. Comparing with the numerical simulation results based on Kriging model, the accuracy of the simulation results in this paper was verified. This study provides a reference for the optimization of the shot peening process, and makes an effective exploration for the precise shot peening numerical simulation.