摘要
将高速摄影技术与动态焦散线方法相结合，研究了爆炸应力波对裂纹、空孔的作用历史，记录了环绕它们的动态焦散斑图，给出了爆炸应力场中裂纹尖端复合应力强度因子的时间依赖关系以及空孔周围应力场分布的瞬态变化过程，为固体介质的爆破机理研究提供了新方法。
The historis of the explosive stress wave acted on the crack and the hole are studied by means of uniting high speed cranz schardin photography with dynamic caustics.Two kinds of dynamic caustic patterns around the crack tip and the hole edge in the field of explosive stress are recorded separately.The time dependent relations of complex stress intensity factors at crack tip and the instaneous response of stress field around hole edge are showed.The results supply the new method of studying the blasting mechanism of solid media.
出处
《爆炸与冲击》
EI
CAS
CSCD
北大核心
1998年第3期231-236,共6页
Explosion and Shock Waves
基金
国家自然科学基金
