Solving hypervelocity impact problems with the material point method

被引：0
|
作者：
Zhang Z. [1 ]
Chen W.-D. [1 ]
机构：
[1] College of Astronautics and Civil Engineering, Harbin Engineering University
来源：
Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2010年 / 31卷 / 10期
关键词：
Debris cloud; Hypervelocity impact; Material point method; Numerical simulation;
D O I：
10.3969/j.issn.1006-7043.2010.10.009
中图分类号：
学科分类号：
摘要：
When using traditional grid methods with large deformation problems caused by hypervelocity impacts, many numerical problems are encountered. These problems include mesh distortion and tangling issues associated with Lagrangian methods and difficulties describing interfaces between materials associated with Eulerian methods. The material point method (MPM), which is a meshfree method, takes advantage of both Eurlerian and Lagrangian methods. Discrete principles, artificial bulk viscosity and time steps were used in this method. By applying the von-Mises strength model and the shock equation of state, a code called MPM-EXPLICIT was developed in FORTRAN 90. Hypervelocity impact problems were then simulated. The calculated results were in agreement with experimental results, verifying the accuracy of the code. The influence of materials and impact velocities when simulating debris cloud shapes was then discussed.
引用
收藏
页码：1312 / 1316
页数：4
相关论文
共 12 条
  • [1] Cui W., Zeng X., Smoothed particle hydro-dynamics algorithm applied in numerical simulation of hypervelocity impact, Journal of National University of Defense Technology, 29, 2, pp. 43-46, (2007)
  • [2] Bei X., Yue Z., A study on 3-dimensional SPH, Chinese Journal of Computational Physics, 14, 2, pp. 155-166, (1997)
  • [3] Bardenhagen S.G., Brackbill J.U., Sulsky D., The material-point method for granular materials, Computer Methods in Applied Mechanics and Engineering, 187, pp. 529-541, (2000)
  • [4] Wieckowski Z., The material point method in large strain engineering problems, Computer methods in applied mechanics and engineering, 193, pp. 4417-4438, (2004)
  • [5] Zhang Z.D., Z W.Q., V W.B., Ma X., Material point method applied to multiphase flows, Journal of Computational Physics, 227, pp. 3159-3173, (2008)
  • [6] Schreyer H.L., Sulsky D.L., Zhou S.J., Modeling delamination as a strong discontinuity with the material point method, Computer Methods in Applied Mechanics and Engineering, 191, pp. 2483-2507, (2002)
  • [7] Sulsky D., Chen Z., Schreyer H.L., A particle method for history-dependent materials, Computer Methods in Applied Mechanics and Engineering, 118, pp. 179-196, (1994)
  • [8] AUTODYN Theory Manual Revision 4.3, (2005)
  • [9] Zhang X., Wang T., Computational Dynamics, pp. 347-350, (2007)
  • [10] AUTODYN User Manual Version 6.1, (2005)
12