| 颗粒体侵彻数值计算方法研究 |
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| 引用本文： | 刘小虎,祝涛.颗粒体侵彻数值计算方法研究[J].高压物理学报,2010,24(1). |
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| 作者姓名： | 刘小虎 祝涛 |
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| 作者单位： | 华中科技大学力学系,湖北武汉,430074 |
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| 摘 要： | 分别采用连续体有限元方法、离散元方法、离散颗粒有限元方法和有限元-离散元混合方法,对钢球以100 m/s和200 m/s的速度侵彻细沙石回收靶过程进行了数值计算,通过对4种方法的计算精度和计算效率的比较分析,表明有限元-离散元方法更适合于颗粒材料侵彻问题的数值计算。
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| 关 键 词： | 侵彻 颗粒材料 软回收 离散元 有限元 |
| 收稿时间： | 2009-04-27; |
Study on Numerical Methods for Particle Material Penetration Problems |
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| LIU Xiao-Hu,ZHU Tao.Study on Numerical Methods for Particle Material Penetration Problems[J].Chinese Journal of High Pressure Physics,2010,24(1). |
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| Authors: | LIU Xiao-Hu ZHU Tao |
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| Institution: | Department of Mechanics, Huazhong University of Science and Technology, Wuhan 430074, China |
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| Abstract: | Four numerical methods, i.e., purely Continuum based Finite Element Method (C-FEM), Discrete Element Method (DEM), Discrete particle based Finite Element Method (D-FEM) and combination of FEM and DEM (FEM-DEM), were explored through numerical examples of steel sphere normally impacting on the sand target at 100 m/s and 200 m/s velocities. Comparing computing efficiencies and precisions of the methods, it is shown that FEM-DEM is the most suitable to simulate problems of sand target penetration. |
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| Keywords: | penetration particle material soft recycle discrete element finite element |
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