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| Finite Element Modeling of Mechanical Response of Aluminum Alloy Materials by Laser Shock Peening |
| SHU Bochao 1 , LI Weidong 1 , HUANG Xia 2 , CHE Zhigang2 |
| (1. School of Machanical Engineering and Automation, Beihang University, Beijing 100191, China; 2. AVIC Manufacturing Technology Institute, Beijing 100024, China) |
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Abstract In order to study the dynamic mechanical properties and residual stress distribution of laser shock peening, the finite element modeling and numerical simulation of 2024–T351 laser shock peening were carried out based on ABAQUS software. The PVDF piezoelectric sensor was used to measure the spatiotemporal distribution data of laser impact force, and the dynamic pressure model of laser shock peening was established. The one-dimensional plate impact test of light-gas gun was used to verify the mechanical constitutive model of aluminum alloy 2024–T351 under ultra-high strain rate. The complex process path loading was realized based on the VDLOAD subroutine, and the nanosecond scale mechanical response characteristics during laser shock were obtained. The finite element simulation of laser shock peening was conducted, and the distribution law of residual stress in the material was analyzed. The surface residual stress test had been proceeded by drilling method. The accuracy of residual stress prediction was proven, which verified the accuracy of the established laser shock peening finite element model.
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2020, 
