颗粒体侵彻数值计算方法研究

刘小虎; 祝涛

doi:10.11858/gywlxb.2010.01.004

颗粒体侵彻数值计算方法研究

doi: 10.11858/gywlxb.2010.01.004

刘小虎,
祝涛

华中科技大学力学系，湖北武汉 430074

详细信息

通讯作者:
刘小虎

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出版历程
- 收稿日期: 2009-04-27
- 修回日期: 2009-07-26
- 发布日期: 2010-02-15

Study on Numerical Methods for Particle Material Penetration Problems

Department of Mechanics, Huazhong University of Science and Technology, Wuhan 430074, China

Funds: null

More Information

Corresponding author: LIU Xiao-Hu

摘要

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。
- 侵彻 /
- 颗粒材料 /
- 软回收 /
- 离散元 /
- 有限元
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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