摘要
通过分析弹丸对线性硬化杆的冲击和线性硬化杆对刚性靶的高速撞击 ,得到冲击条件下杆屈曲发生的临界条件 .在分析中考虑了应力波的传播、反射以及应力波之间的相互作用 .分析了杆中的应力和屈曲发生的可能性 .结合具体材料进行计算 ,得出了临界屈曲条件 ,总结出屈曲发生时撞击力和屈曲位置之间的关系以及撞击速度与杆长径比之间的关系 .
A pill striking a linear reinforced rod and a linear reinforced rod striking a rigid target are studied. The two critical condition equations are achieved. The propagation, reflection and reciprocity of stress wave are considered in the analysis. The stress in the rod and possibility of buckling are also analyzed. At last, specific material is used to carry out numerical calculations from which a relationship between the impact stress and the position of buckling is obtained. A relationship between the flight velocity and the slenderness ratio of the rod is also arrived at. These conclusions are important to the dynamic buckling experiment of the finite linear reinforced elastic plastic rod.
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2003年第2期158-161,共4页
Transactions of Beijing Institute of Technology
基金
国家自然科学基金资助项目 ( 19972 0 12 )
关键词
动态屈曲
长杆高速撞击
应力波效应
dynamic buckling
thin rod impact with high velocity
stress wave effect
