激光技术2012，Vol.36Issue(1)：45-49,5.DOI:10.3969/j.issn.1001-3806.2012.91.013
激光冲击AM50镁合金残余应力场的有限元分析
Finite element analysis on residual stress field for laser shock processing AM50 magnesium alloy
摘要
Abstract
In order to study the characteristics of the residual stress field in the laser shocked area, the residual stress was studied with finite element analysis method. With a Nd: glass pulse laser shocking the surface of AM50 magnesium alloy in experiments, when the laser power density was about 3GW/cm2, the compressive residual stress on the surface of laser shocked area reached -146MPa, and the depth of the compressive residual stress layer was about 0. 8mm. Numerical analysis was done with finite element software ABAQUS. The numerical analysis results showed that when the laser power density was over 0. 49GW/cm2, there was compressive residual stress in the shocked area, as the laser power density increased, the residual compressive stress also increased and when the laser power density was between 1. 95GW/cm and 3.06GW/cm , the residual compressive stress reached saturation. The results show that the calculation results conforms to the experimental data, the numerical results can be used as theoretical basis for optimizing the process parameters in laser shock processing.关键词
激光技术/激光冲击/镁合金/残余应力场/有限元分析Key words
laser technique/ laser shock processing/ magnesium alloy/ residual stress field/ finite element analysis分类
信息技术与安全科学引用本文复制引用
申来娣,陈菊芳,李兴成,李仁兴..激光冲击AM50镁合金残余应力场的有限元分析[J].激光技术,2012,36(1):45-49,5.基金项目
江苏省高校自然科学基金资助项目(09KJB460002) （09KJB460002）
江苏技术师范学院基础及应用基础研究基金资助项目(KYY09015) （KYY09015）
