Numerical Simulation on Laser Peen Forming of Metal sheet
The laser peen forming (LPF) uses laser-induced shock wave pressure to induce unbalanced residual stress field in the materials, the moment of the residual stress causes the metal sheet to produce plastic bending deformation. In order to understand and control the process of laser peen forming, a developed FEM model was established and the process of LPF was simulated by FEM code ABAQUS. Special emphasis was posed on the part of the model devoted to the analysis of 3D residual stress distribution under the laser shock wave loading. With the aid of simulation method, the influence of laser parameters, number of shots, peening tracks and the characteristics of sheet bending were investigated. The results indicate that the bending deformation of plate is relative to laser peening numbers, peening coverage and the plates thickness. Both upper and back layers of the deformed sheet exists residual compressive stresses. The gained conclusions have significance for optimizing the process parameters and controlling the LPF process.
laser peening plate forming residual stress numerical simulation
Jian-zhong ZHOU Yu-jie Fan Shu HUANG Su-qin Jiang Jian-jun DU
School of Mechanical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
国际会议
郑州
英文
2007-10-23（万方平台首次上网日期，不代表论文的发表时间）