| Citation: | XIAO Zhixing, MAO Jianxing, TIAN Tengyue, et al. Numerical simulation and experimental verification on laser shock peening for turbine mortise[J]. Journal of Aerospace Power, 2022, 37（11）：2448-2454 doi: 10.13224/j.cnki.jasp.20220324
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A numerical simulation method of laser shock peening of curved structure based on the idea of discretization was proposed. The precise definition of the impacted area and pressure was realized through the spatial geometric relationship and the principle of energy conservation, and the numerical simulation of laser shock peening of any curved surface and any angle can be realized. Then the target mesh size was determined according to the requirements of mesh independence. Using this method, the residual stress distribution law of the characteristic for the turbine mortise structure after laser shock peening was explored. Compared with the experimental results, the prediction error was less than 20%. The research showed that the residual compressive stress in a certain depth range was introduced into the mortise of the turbine disk after laser shock peening, but due to the process accessibility caused by the structural characteristics of the curved surface, the residual stress value was lower than the plane structure at the same process level, and there were differences in different directions.
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