激光熔凝加工中瞬时温度场数值模拟

基金项目: 国家自然科学基金资助重点项目(59836220);863国家高技术研究发展计划资助项目(2002AA331180);国家重大基础研究前期研究专项资助项目(2002CCA01200)

Numerical Simulation of Transient Thermal Field in Laser Melting Process

Department of Mechanics, Institute of Mechanical Science and Engineering, Jilin University, Changchun 130025, P. R. China;

摘要: 以激光熔凝表面强韧化处理为背景，应用空间弹塑性有限单元和高精度数值算法同时考虑材料组织性能的变化模拟工件的温度场，主要研究激光熔凝加工中瞬时温度场数值模拟，同时考虑相变潜热的影响，为第二步热应力场及残余应力的数值模拟做准备．用算例验证了模型的正确性，最后给出了激光熔凝加工不同时刻温度场分布．
- 激光熔凝加工 /
- 温度场 /
- 数值模拟
Abstract: Numerical simulation of thermal field was studied in laser processing. The 3-D finite element model of transient thermal calculation is given by thermal conductive equation. The effects of phase transformation latent are considered. Numerical example is given to verify the model. Finally the real example of transient thermal field is given.
- laser melting process /
- thermal field /
- numerical simulation

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