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| 激光辅助冷喷涂Cu颗粒撞击45钢的数值模拟 | |
| 引用本文： | 骆芳,赵兵,姚建华. 激光辅助冷喷涂Cu颗粒撞击45钢的数值模拟[J]. 兵工学报, 2015, 36(11): 2157-2163. DOI: 10.3969/j.issn.1000-1093.2015.11.021 |
| 作者姓名： | 骆芳 赵兵 姚建华 |
| 作者单位： | (1.浙江工业大学 之江学院，浙江 杭州 310024; 2.浙江工业大学 激光加工技术工程研究中心， 浙江 杭州 310014; |
| 基金项目： | 国家自然科学基金，浙江省重大科技专项重点工业项目 |
| 摘 要： | 采用有限元分析软件ANSYS Multiphysics /LS-DYNA模块，选取Johnson-Cook材料模型与双线性各向同性硬化材料模型，建立了激光辅助冷喷涂三维模型，并通过这两种材料模型模拟了不同入射速度和沉积点温度条件下，Cu颗粒撞击45钢基体的沉积过程，分析了速度、沉积点温度对沉积颗粒变形行为的影响。结果表明：常温下颗粒撞击速度为800 m/s和基体预热温度850 ℃、 颗粒速度为500 m/s时，Cu颗粒都能有效沉积到45钢基体上；两种模型都能用于预测激光辅助冷喷涂工艺参数。 |
| 关 键 词： | 材料表面与界面 冷喷涂 材料模型 模拟 |
| 收稿时间： | 2014-12-23 |
Numerical Simulation of Cu Particles Impacting on Medium Steel in Laser-assisted Cold Spraying |
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| LUO Fang,ZHAO Bing,YAO Jian-hua. Numerical Simulation of Cu Particles Impacting on Medium Steel in Laser-assisted Cold Spraying[J]. Acta Armamentarii, 2015, 36(11): 2157-2163. DOI: 10.3969/j.issn.1000-1093.2015.11.021 | |
| Authors: | LUO Fang ZHAO Bing YAO Jian-hua |
| Affiliation: | (1.College of Zhijiang, Zhejiang University of Technology, Hangzhou 310024, Zhejiang, China;2Research Center of Laser Processing Technology and Engineering, Zhejiang University of Technology, Hangzhou 310014, Zhejiang, China;3Zhejiang Provincial Collaborative Innovation Center of High end Laser, Hangzhou 310014, Zhejiang, China） |
| Abstract: | The 3D simulation of Cu particles impacting on medium steel substrate in the laser-assisted cold spray process is performed using the finite element analysis software ANSY/LS-DYNA based on Johnson-Cook material model and bilinear isotropic hardening material model. The process parameters, such as particle impact velocity, deposition temperature, are simulated to obtain the deformation contours, crater depth and so on. The results show that Cu particles can be deposited on medium steel effectively at the velocity of 800 m/s in room temperature environment and at the velocity of 500 m/s at 850 ℃. In addition, the two material models both can be used to predict the process parameters for the laser-assisted cold spraying. |
| Keywords: | material surface and interface cold spray material model simulation |
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