尖头弹穿甲韧性金属靶模型分析

摘要

基于延性扩孔模式,分析了尖头弹穿甲韧性金属靶的Chen-and-Li模型和Forrestal-and-Warren模型.结果表明,2种模型形式相同但适用范围不同,差异源于分别应用球形和柱形动态空腔膨胀理论.将2种模型与相关尖头弹穿甲金属靶的实验数据做了比较,对应于尖头刚性弹对韧性金属靶的延性扩孔穿甲,理论分析与实验结果吻合.%Based on the mode of ductile hole expansion, the Chen-and-Li model and Forrestal-and-Warren model were analyzed for a rigid sharp-nosed projectile perforating ductile metallic target plates. A-nalysis shows that these two models have the same formula, but their applicable ranges are different which is due to their employing the cylindrical cavity expansion theory and spherical cavity expansion theory, respectively. And these two models were compared with the experimental results from the perforation of aluminum plates by rigid sharp-nosed projectiles. The theoretical results by these two models are in agreement with the experimental results.