Tracking Method for Multi-material Interfaces and Its Application in Shaped Charge
In respect of multi-material interfaces tracking problem in Eulerian method, this paper proposes and develops a new interface tracking algorithm, i.e., markers on grid line. Based on this, the hydro-elastoplastic model for two-dimension is established, which embraces state equation and thermal softening effect of materials. Furthermore, the corresponding numerical method is presented. By means of a two-dimensional hydro-elastoplastic code with the interface tracking algorithm developed by us, numerical tests have been conducted in the process of motion of different-shaped objects in translational, rotational and shear fluid fields, based on which the interface tracking method proposed in the paper is verified. Finally, the simulation of the formation process of shaped charge jet is performed by the code. The numerical results are in good agreement with the experimental data. This proves that the code can not only deal with large material deformation problems, but also clearly track the variations of material interfaces. Hence it is especially suitable for simulating the formation process of shaped charge jet.
Numerical simulation Markers on grid line Interface tracking Shaped charge jet
Cheng Wang Tianbao Ma Jianguo Ning
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, PR China
国际会议
郑州
英文
2007-10-23（万方平台首次上网日期，不代表论文的发表时间）