激光与光电子学进展, 2017, 54 (10): 101411, 网络出版: 2017-10-09   

激光冲击316L不锈钢焊接件的模拟分析与试验研究

Simulation Analysis and Experimental Study of 316L Stainless Steel Weldments Processed by Laser Shock Peening
作者单位
江苏大学机械工程学院, 江苏 镇江 212013
摘要
采用ABAQUS有限元分析软件, 建立了一种“焊接+激光冲击强化(LSP)”应力分布模型, 研究了不同能量LSP对316L不锈钢氩弧焊焊缝区域应力分布及应变的影响。研究结果表明, 由该模型模拟得到的残余应力分布与试验结果一致。LSP在焊缝区域表面诱导出残余压应力层, 消除了焊接热影响引起的残余拉应力; 随着激光脉冲能量的增大, 激光冲击诱导的残余压应力以及压应力层厚度增加, 但增加幅度减小; 焊接件表面应变峰值随着激光脉冲能量的增加而增大。
Abstract
A stress distribution model of "welding+laser shock peening (LSP)" is established by using the ABAQUS finite element analysis software, and the effect of LSP with different pulse energies on the stress distribution and strain in the welding zones of 316L stainless steels processed by the argon-arc welding is studied. The study results show that the residual stress distribution simulated by this model is similar to the experimental result. LSP can induce a residual compressive stress layer in the welding zone to eliminate the residual tensile stress induced by the welding thermal influence. With the increase of laser pulse energy, the residual compressive stress and the depth of residual compressive stress layer increase, but the increase becomes smaller. The peak value of strain on the weldment surface increases with the increase of laser pulse energy.

卢海飞, 鲁金忠, 张文泉, 罗开玉. 激光冲击316L不锈钢焊接件的模拟分析与试验研究[J]. 激光与光电子学进展, 2017, 54(10): 101411. Lu Haifei, Lu Jinzhong, Zhang Wenquan, Luo Kaiyu. Simulation Analysis and Experimental Study of 316L Stainless Steel Weldments Processed by Laser Shock Peening[J]. Laser & Optoelectronics Progress, 2017, 54(10): 101411.

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