通过模拟弹性介质和流体中的强间断传播,分析了守恒元/解元(CE/SE)、立方插值伪质点法(CIP)、Roe格式以及二阶Godunov方法(MUSCL)四种格式对流体弹塑性问题的适应性,发现CE/SE方法和MUSCL方法较为优越。利用CE/SE方法模拟了爆炸焊接形成的波状界面问题,印证了CE/SE方法在处理流体弹塑性问题上的优越性。
In this paper, the feasibilities for hydro elastic-plastic model with four famous fluid dynamics numerical methods, namely, CE/SE, CIP, Roe and MUSCL are investigated. The mechanical process involving strong discontinuity in elastic mediums and the one-dimensional shock tube problem are simulated, by using the four methods. By analyzing the numerical results carefully, one could preliminarily conclude that CE/SE method and MUSCL method are better for solving hydro-elasticplastic problems. Due to the clear physics concepts in the construction process and the higherresolution, CE/SE method is the most suitable for computing hydro-elastic-plastic problems in the four schemes. To test the capability in detail, CE/SE method is also performed to simulate a hydro-elastic-plastic problem, which is the wavy interface generation process in explosive welding of steel-copper plates and aluminum-copper plates. The computational results are very similar to the experimental ones.