摘要
采用脆性体动态断裂准则和富氏分析方法，给出了矩形波、钟形波和指数衰减波加载于岩石的能量耗散差异。在此基础上，就应力脉冲的形状、延续时间等对岩石破碎效果的影响进行了讨论，得到了与不同加载波下岩石耗能实验研究相吻合的结果。
Using the dynamic fractural criterion for brittle materials and the Fourier transform method,this paper analyses energy dissipation of rock under impulsive loading with different waveforms,such as rectangular,symmetric bell-shaped and exponential-attenuating pulses,respectively. On this basis,the effects of both shapes and durations of stress pulses on rock fragmentation have been discussed and compared with each other.The above analytical results are ingood agreement with the experimental investigation on rock energy dispersion and fragmentativedegree under impulsive loading with different pulse shapes and durations.
出处
《爆炸与冲击》
EI
CAS
CSCD
北大核心
1994年第2期129-139,共11页
Explosion and Shock Waves
基金
国家自然科学基金
关键词
岩石动力学
能量耗损
应力波
破碎
rock fragamentation,rook dynamics,energy dissipation,stress pulses
