| 激光增材制造热-力耦合数值模拟研究现状及进展 |
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| 引用本文： | 何贝贝,吴文恒,张亮,卢林,杨启云.激光增材制造热-力耦合数值模拟研究现状及进展[J].材料导报,2017,31(Z2):465-469. |
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| 作者姓名： | 何贝贝 吴文恒 张亮 卢林 杨启云 |
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| 作者单位： | 上海材料研究所,上海200437;上海3D打印材料工程技术研究中心,上海 200437,上海材料研究所,上海200437;上海3D打印材料工程技术研究中心,上海 200437,上海材料研究所,上海200437;上海3D打印材料工程技术研究中心,上海 200437,上海材料研究所,上海200437;上海3D打印材料工程技术研究中心,上海 200437,上海材料研究所,上海200437;上海3D打印材料工程技术研究中心,上海 200437 |
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| 基金项目： | 2016工业强基工程资助项目(TC160A310);上海市自然科学基金项目(17ZR1409200);工程技术研究中心建设专项项目(15DZ2251100);上海材料研究所技术创新项目(17SG-14);上海产业技术研究院创新先锋计划(16CXXF006) |
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| 摘 要： | 激光增材制造技术加工过程中温度变化迅速而剧烈,导致成形件内部产生复杂的热应力和残余应力,这是成形件发生应力变形、翘曲、开裂等加工缺陷的根本原因。并且,剧烈的温度变化使得难以直接使用实验观察其温度场和应力场演变规律。因此,通过建立有限元模型进行数值模拟的方法来分析热-力耦合场的分布以及其对成形件质量的影响尤为必要。总结了金属激光增材制造技术温度场和应力场的数值模拟研究进展及现阶段存在的一些问题,进一步探讨了金属激光增材制造技术在数值模拟方面的未来发展方向。
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| 关 键 词： | 增材制造 数值模拟 温度场 应力场 |
Research Status and Progress of Numerical Simulation on Thermal-mechanical Behavior During Laser Additive Manufacturing |
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| HE Beibei,WU Wenheng,ZHANG Liang,LU Lin and YANG Qiyun.Research Status and Progress of Numerical Simulation on Thermal-mechanical Behavior During Laser Additive Manufacturing[J].Materials Review,2017,31(Z2):465-469. |
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| Authors: | HE Beibei WU Wenheng ZHANG Liang LU Lin and YANG Qiyun |
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| Affiliation: | Shanghai Research Institute of Materials, Shanghai 200437;Research Center of Materials Engineering for Additive Manufacturing, Shanghai 200437,Shanghai Research Institute of Materials, Shanghai 200437;Research Center of Materials Engineering for Additive Manufacturing, Shanghai 200437,Shanghai Research Institute of Materials, Shanghai 200437;Research Center of Materials Engineering for Additive Manufacturing, Shanghai 200437,Shanghai Research Institute of Materials, Shanghai 200437;Research Center of Materials Engineering for Additive Manufacturing, Shanghai 200437 and Shanghai Research Institute of Materials, Shanghai 200437;Research Center of Materials Engineering for Additive Manufacturing, Shanghai 200437 |
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| Abstract: | The powder bed experienced a serious temperature variation during the laser additive manufacturing,which resulted in the complicated transient and residual stress field,and the deformation such as curl and crack. Moreover, it would be very difficult to obtain the precise temperature distribution using the trial-and-error experimental measurements during the laser additive manufacturing process. Therefore, the methods of numerical simulation have to be developed as an alternative way to predict the thermal-mechanical behaviors and their effect on the fabrication process.The development of numerical simulation in temperature and stress field during additive laser manufacturing of metal powder is summarized in this paper. The development direction of numerical simulation in this technology is also addressed. |
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| Keywords: | additive manufacturing numerical simulation temperature field stress field |
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