Application of Central Composite Design Based on Numerical Integration for Optimization of Laser Shock Peening

Gang Zheng; Jin Rong Fan; Shu Huang; Jian Zhong Zhou; Hong Yan Ruan

doi:10.4028/www.scientific.net/AMR.452-453.1074

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 452-453Application of Central Composite Design Based on...

Application of Central Composite Design Based on Numerical Integration for Optimization of Laser Shock Peening

Abstract:

In order to analyze effect of processing parameters on Laser Shock Peening(LSP), a novel numerical model integrated with FEM and statistical optimization algorithm was established, and the numerical simulation of LSP process was carried out. In simulation, laser pulse energy, beam diameter and center distance were considered as control parameters, while the compressive residual stress and the deformation value as output aim parameters,. The results indicates that the laser pulse energy has the strongest impact on the surface residual stress, while the spot diameter affects the section residual stress and the surface deformation. Moreover, the response surface function was applied to predict and optimize laser parameters. Lastly the presented method was veriﬁed by experiments.