Establishment of surface strain prediction model of E690 high strength steel by laser shock processing

doi:10.13251/j.issn.0254-6051.2020.10.043

Abstract

Abstract: The ABAQUS finite element software was used to simulate the transformation of the surface strain and stress of E690 high strength steel loaded by laser shock wave, and the relationship between the stress diagram and plastic deformation under different shock wave pressures was analyzed. The strain prediction model of the E690 high strength steel by laser shock processing was established, and the model to verify accuracy of the experiment was designed. The results show that, the dynamic response of the E690 high strength steel under laser shock processing follows the Hugoniot elastic limit formula. The plastic deformation caused by the laser shock processing on the surface of the E690 high strength steel has a positive correlation with the residual stress of the surface. The experimental results are in good agreement with the simulation results.

Key words: laser shock processing, ABAQUS, surface strain, residual stress

CLC Number:

Wang Shuai, Yang Yang, Hua Guoran, Cao Yupeng, Ge Liangchen, Qiu Ming. Establishment of surface strain prediction model of E690 high strength steel by laser shock processing[J]. Heat Treatment of Metals, 2020, 45(10): 225-230.

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