摘要
激光冲击强化技术(LSP)是一种新型的表面处理技术,它利用激光冲击波作用靶材表面而产生残余压应力场。通过有限元软件模拟(FEM)可以分析激光冲击强化处理后靶材的残余压应力场分布,分析材料表面和深度方向的残余应力场的分布情况。先分析了材料的本构模型、激光冲击波的峰值压力的计算、有限元单元类型的选取、边界条件的处理等条件;再通过有限元软件ABAQUS对激光冲击TC4钛合金板料进行了数值模拟,分析了残余应力场的分布特点。
Laser shock processing （LSP） is a new surface treatment technology, which uses the laser shock wave to act on the surface of the target and form residual compressive stress field. Through the finite element method （FEM）, simulation can analyse the distribution of the target＇s residual compressive stress field after LSP, and the distributions of the residual stress field of the surface and the depth. Constitutive model, the calculation of laser shock wave＇s peak pressure, the selection of finite element, the boundary condition, are analysed. ABAQUS software is applied to simulate the laser shock processing of TC4 titanium alloy sheet, and the distributions of the residual stress field are analysed.
出处
《机械工程师》
2013年第10期85-87,共3页
Mechanical Engineer
关键词
激光技术
激光冲击强化处理
有限元分析
残余应力场
laser technique
laser shock processing
finite element method
residual stress field
