| 激光熔凝加工中瞬时温度场及残余应力数值模拟 |
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| 引用本文： | 姚国凤,陈光南.激光熔凝加工中瞬时温度场及残余应力数值模拟[J].应用激光,2002,22(2):241-243. |
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| 作者姓名： | 姚国凤 陈光南 |
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| 作者单位： | 中国科学院力学研究所,北京,100080 |
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| 基金项目： | 国家自然科学基金(59836220) |
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| 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及残余应力,研究激光熔凝加工中瞬时温度场及残余应力数值模拟,同时考虑相变潜热及相变塑性的影响,用算例验证了模型的正确性,给出了不同时刻温度场分布及残余应力分布。
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| 关 键 词： | 激光熔凝加工 温度场 残余应力 数值模拟 |
Numerical Simulation of Transient Thermal Field and Residual Stress in Laser Melting Process |
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| Yao Guo - Feng,Chen Guang - Nan.Numerical Simulation of Transient Thermal Field and Residual Stress in Laser Melting Process[J].Applied Laser,2002,22(2):241-243. |
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| Authors: | Yao Guo - Feng Chen Guang - Nan |
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| Abstract: | The present paper study numerical simulation of thermal field and residual stress in laser processing. The 3 - D finite element model of transient thermal calculation is given by thermal conductive equation. It considers the effects of phase transformation latent. Numerical example is given to verify the model. Finally the example of transient thermal field and residual stress is given. |
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| Keywords: | laser melting process thermal field residual stress numerical simulation |
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