计算物理 ›› 2003, Vol. 20 ›› Issue (5): 447-454.

• 论文 • 上一篇    下一篇

高速碰撞数值计算中的光滑粒子法

张刚明, 王肖钧, 王元博, 王吉, 王峰   

  1. 中国科学技术大学力学与机械工程系, 安徽 合肥 230026
  • 收稿日期:2002-08-07 修回日期:2003-01-17 出版日期:2003-09-25 发布日期:2003-09-25
  • 作者简介:张刚明(1974-),男,江苏盐城,博士生,从事冲击力学中的数值方法和数值计算方面的研究.
  • 基金资助:
    国家自然科学基金(A020210);武器装备预研基金(51479010303ZK0102)资助项目

Smoothed Particle Hydrodynamics Method to Numerical Simulation of Hypervelocity Impact

ZHANG Gang-ming, WANG Xiao-jun, WANG Yuan-bo, WANG Ji, WANG Feng   

  1. University of Science and Technology of China, Hefei 230026, China
  • Received:2002-08-07 Revised:2003-01-17 Online:2003-09-25 Published:2003-09-25

摘要: 扼要讨论了改进的光滑粒子法的离散思想,给出了二维轴对称问题中连续介质力学守恒方程的离散过程及离散格式,提出了轴对称坐标下确定影响域内粒子数的方法.最后通过高速碰撞的系列算例说明,光滑粒子法不但适宜于计算大变形冲击力学问题,而且有着其它网格法所无法替代的优势.

关键词: 光滑粒子法, 轴对称, 高速碰撞, 有限元

Abstract: Based on a brief description of Corrected Smoothed Particle Hydrodynamics (CSPH) method, the discretization scheme of conservation equations in axisymmetric coordinate systems is developed and a method to determine the number of particles in the computational domain is proposed. Numerical examples for hypervelocity impact are carried out and the results clearly show that CSPH is not only a suitable method for the simulation of large deformation problems in impact dynamics, but also a new method with the advantages that can not be replaced by finite element/ finite difference method.

Key words: SPH, axisymmetric, hypervelocity impact, finite element

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