基于SPH方法的弹丸侵彻仿真分析

摘要

借助于SPH数值仿真算法，对弹丸侵彻钢板问题进行了专门研究。研究中采用SPH算法和有限元算法对比分析的方式，对两种不同速度条件下的侵彻问题做了仿真分析。分析完成后从物理现象和时程曲线角度对不同条件下的结果做了对比分析，发现：两种算法都能够用来分析侵彻问题，并且在对速度分析上的结果及其变化规律具有一致性；但是，SPH算法比有限元方法更能真实的反映侵彻过程中物料飞溅的物理现象，其中伴随冲击速度的增大，物料飞溅程度和薄板变形增大。%It takes a study of the projectile penetration by SPH method.The penetration problem was simulation by both SPH method and FEA method,and the condition was different.From the analysis result,we found the following conclusions.First this two methods were effective to the penetration problem,and the velocity change rule had consistency.Secondly SPH method can reflect the material splashing more authentic,and the faster the impact velocity,the bigger of both the splashing and the deformation for the sheet.