摘要
利用显式动力有限元程序ANSYS/LS-DYNA,采用ALE方法和Steinberg本构模型,对钨合金长杆弹侵彻半无限厚钢靶进行了数值模拟,给出了侵彻过程4个阶段的完整图像和相关物理量的时程变化曲线,分析了弹、靶的压力分布、质点速度以及材料的流动特性。结果表明:在较大速度范围内,模拟计算的侵彻深度与实验结果吻合得很好;沿侵彻轴线,弹靶交界面附近的材料行为主要由静水压力控制。
Numerical simulation of the penetration of tungsten alloy long rod into semi-infinite armor steel targets is performed with ALE method and Steinberg constitutive model coupled in ANSYS/LS-DYNA finite element code. The configurations of four different phases in the penetration process and the changes of relevant physical parameters with time are given. The distribution of pressure,particle velocity and the material flow characteristics of both the penetrator and the targets are analyzed. It is revealed that the numerically predicted depth of penetration is in good agreement with available experimental results and that the behavior of materials adjacent to the interface of penetrator and targets is controlled mainly by the hydrostatic pressure.
出处
《高压物理学报》
EI
CAS
CSCD
北大核心
2008年第3期245-252,共8页
Chinese Journal of High Pressure Physics
关键词
长杆弹
半无限靶
侵彻
Steinberg模型
数值模拟
long rod penetrator
semi-infinite target
penetration
Steinberg model
numerical simulation
