引用本文:李文亚， 张冬冬， 黄春杰， 殷硕， 余敏， 周香林.冷喷涂粒子碰撞行为和临界速度预测的数值模拟研究现状[J].中国表面工程,2014,27(1):1~11
LI Wenya, ZHANG Dongdong, HUANG Chunjie, YIN Shuo, YU Min, ZHOU Xianglin.State-of-the-art of Particles Impacting Behavior and Prediction of Critical Velocity for Cold Spraying by Numerical Simulations[J].China Surface Engineering,2014,27(1):1~11
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冷喷涂粒子碰撞行为和临界速度预测的数值模拟研究现状
李文亚， 张冬冬， 黄春杰， 殷硕， 余敏， 周香林1,2,3
1. 西北工业大学 凝固技术国家重点实验室， 西安 710072;2. 贝尔福蒙贝利亚技术大学， 法国 贝尔福 90010;3. 北京科技大学 新金属材料国家重点实验室， 北京 100083
摘要:
目前，冷喷涂技术受到越来越多国内外学者的关注。文中基于已公开发表的文献，详细讨论了冷喷涂过程中粒子碰撞行为的数值模拟和临界速度预测的研究现状。首先，简要介绍了冷喷涂、粒子结合机理和临界速度的概念。其次，总结了拉格朗日法、欧拉法和光滑粒子法等数值计算方法，并对数值计算获得的结果，例如：变形形貌、界面温度、能量变化及临界速度的预测进行了讨论。最后，探讨了冷喷涂粒子碰撞行为数值模拟中存在的问题和研究前景。
关键词:  冷喷涂  数值模拟  碰撞行为  临界速度
DOI：10.3969/j.issn.1007-9289.2014.01.001
分类号:
基金项目:
State-of-the-art of Particles Impacting Behavior and Prediction of Critical Velocity for Cold Spraying by Numerical Simulations
LI Wenya, ZHANG Dongdong, HUANG Chunjie, YIN Shuo, YU Min, ZHOU Xianglin1,2,3
1. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xian 710072;2. Université de Technologie de BelfortMontbéliard, Site de Sévenans, Belfort Cedex 90010, France;3. State Key Laboratory of Advanced Metals and Materials, Uinversity of Science and Technology Beijing, Beijing 100083
Abstract:
Cold spraying (CS) is increasingly attracting attention worldwide. Based on the published literature, the particles impacting behavior and the prediction of critical velocity during CS by numerical simulations were summarized in detail. First, the concept of CS, particle bonding mechanism and critical velocity were briefly introduced. Then, the numerical computation methods including the Lagrangian method, Eulerian method and smoothedparticle hydrodynamics method were reviewed. Besides, the valuable information obtained from modeling, such as splat morphologies, interface temperature, energy transformation and prediction of critical velocity were discussed. Finally, the issues and prospects of numerical simulations of CS particles impacting were indicated.
Key words:  cold spraying  numerical simulations  impacting behavior  critical velocity
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