Product Code: PIC2008_P148

Dynamical Simulation and Experimental Study on Laser Peen Forming of 6061-T6 Aluminum Alloy Plate
Authors:
Jianzhong Zhou, Jiangsu University; Zhenjiang CO Peoples Republic of China
Shu Huang, Jiangsu University; Zhenjiang Peoples Republic of China
Yujie Fan, Jiangsu University ; Zhenjiang Peoples Republic of China
Suquin Jiang, Jiangsu University ; Zhenjiang Peoples Republic of China
Li Xiao, Jiangsu University ; Zhenjiang Peoples Republic of China
Yueqing Sun, Jiangsu University ; Zhenjiang Peoples Republic of China
Yibin Chen, Jiangsu University ; Zhenjiang Peoples Republic of China
Presented at PICALO 2008

Laser peen forming (LPF) uses laser-induced shock wave pressure to induce unbalanced residual stress field in the materials, the metal responds to the residual stress by elongating at the peened surface and effectively bending the overall shape. In order to understand and control the process of laser peen forming, a developed FEM model was established and the dynamical process of LPF was simulated by FEM code ABAQUS. Special emphasis was posed on the part of the model devoted to the analysis of the 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, overlapped shots and the characteristics of sheet bending were investigated. The results indicate that the deformation of the peened plate is relative to laser peening numbers, peening coverage and the plates thickness, both the upper and back layers of the deformed plate existed residual compressive stresses. The gained results have significance for optimizing the process parameters and controlling the LPF process.