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利用计算机模拟激光热处理过程有利于减小试验成本。本文通过JMat Pro软件建立了考虑相变并依赖于温度的材料模型,利用耦合傅立叶传热模型和固体力学模型建立了法兰盘激光热处理热固耦合模型,分析了在激光热处理过程中法兰盘的动态温度分布、残余应力及工件变形情况。结果表明:在激光光束作用域前部温度低于作用域的后部温度。随着激光热源撤去及热传递的进行,法兰盘内部温度明显高于外部温度,且法兰盘表面应力开始逐渐均匀化,法兰盘内部应力比较大而边缘应力较小。
The use of computer simulation laser heat treatment process is conducive to reducing the cost of testing. In this paper, the material model of phase change and temperature dependent is established by JMat Pro software. The coupled thermo-mechanical model of flange laser heat treatment is established by coupling Fourier heat transfer model and solid mechanics model. Dynamic temperature distribution, residual stress and workpiece deformation. The results show that the temperature at the front of the laser beam is lower than the temperature at the back of the laser beam. With the removal of the laser heat source and the heat transfer, the internal temperature of the flange is obviously higher than the external temperature, and the stress on the surface of the flange gradually becomes uniform. The internal stress in the flange is relatively large and the edge stress is small.