摘要
基于理想刚塑性的材料模型假定,同时考虑靶板弯曲塑性变形和剪切滑动,完整地分析了平板受刚性体撞击或受局部压力脉冲冲击的动力响应和失效模式。得到了撞击物侵彻深度、靶板穿透条件、塑性变形范围等特征变形破坏参数的解析表达式。讨论了撞击物速度、压力脉冲的冲量和形状等参量对响应和破坏模式的影响。比较了刚塑性理论分析结果与相关的实验和弹塑性数值计算结果。
The dynamic response and failure modes with the interaction of bending deformation and shear sliding of an infinitely large rigid-plastic plate impacted by a rigid cylinder or a local impulse is theoretically analyzed herein. The analytical expressions are obtained for the embedding depth of the striker,the condition of perforation and the dimension of plastic deformation region of the target plate;and the influence of the initial velocity of the striker or the impulse and time shape of the local loading pulse on the response and failure modes are discussed. Comparisons show the present rigid-plastc solution is in good agreement with the related experimental and e-lastoplastic numerical results.
出处
《爆炸与冲击》
EI
CAS
CSCD
北大核心
1993年第3期233-242,共10页
Explosion and Shock Waves
基金
国家高技术计划激光技术领域资助
关键词
刚塑性平板
动力响应
失效
rigid-plastic plate,dynamic response,shear sliding,perforation
