摘要
在基于有限元法中差分包软件LS-DYNA-970的平台上对钢制球形头部弹丸侵彻平面钢板的极限深度问题进行了3-D数值仿真分析,在研究过程中使用了在ALE方法下的Johnson-Cook理论模型,此模型可以在分析受力失效的同时考虑温度变形,由此获得了在不同初速下侵彻极限深度的数值结果。并且在研究中得出了变形体弹丸与刚体弹丸的结果对比关系,分析了由于弹体变形给两者带来的差异。计算结果与文献中的实验数据吻合较好。
Based on the platform of LS-DYNA-970,the paper made the analysis of 3D numerical simulation.It adopted Johnson-Cook theory model under ALE method in the research process,and the model could simultaneously consider the temperature deformation when it analyzed stress invalid,therefore it obtained the numerical results under the condition of penetration limitation depth at different starting velocity as well as correlation between deformation body and rigid body pill,and it also analyzed the difference of the both resulted in projectile body deformation.The simulation result shows that the computing result is better fitted with the experiment data in the literature.
出处
《四川兵工学报》
CAS
2011年第6期21-24,共4页
Journal of Sichuan Ordnance
关键词
数值模拟
侵彻
极限深度
变形体弹丸
刚体弹丸
numerical simulation
penetration
limitation depth
deformation body pill
rigid body pill
