基于LS-DYNA二次开发的AlNi合金弹丸对单层靶的撞击特性研究

Impact characteristics of AlNi alloy projectile on single-layer target based on LS-DYNA secondary development

基于塑性功温升原理对Johnson Cook材料模型中的温度项进行了简化,并加入了冲击反应材料化学反应模型,基于LS-DYNA平台下的二次开发功能编写得到适用于冲击反应材料的本构模型。建立了弹丸撞击单层防护结构的仿真模型并分别研究了普通材料和冲击反应材料的毁伤特性。得到了不同撞击参数下冲击反应材料和普通金属弹丸对单层靶板的毁伤规律。

Based on the principle of plastic work temperature rise,the temperature term in Johnson Cook material model is simplified,and the chemical reaction mechanism of impact reaction materials is added.Based on the secondary development function under LS-DYNA platform,the constitutive model suitable for impact reaction materials is written.The simulation model of projectile impact on single-layer protective structure is established and the damage characteristics of ordinary materials and impact reaction materials are studied respectively.