摘要
简单介绍了岩石破裂过程分析程序模拟岩石在动载荷作用下破裂过程的原理和功能,并用该程序研究岩石试样在静态和动态载荷作用下的劈裂破坏过程。数值模拟再现了岩石在静态和动态应力作用下破裂模式的差异,给出了在不同冲击应力波幅值条件下岩石试样的3种典型的破裂模式。数值模拟表明,在动态加载时,应力波幅值较低时试样表现出与静态加载时类似的破裂模式,随着应力波幅值的增加,其他2种典型破裂模式就表现出来。
The program, rock failure process analysis (RFPA), is developed and the principle of RFPA to simulate the static and dynamic failures of rock are briefly summarized. RFPA is used to study the failure process of rock specimens under static and dynamic loadings. The numerical simulation reproduces the different failure characteristics of rock under static and dynamic loadings, and three typical failure patterns are found under the action of stress wave with different amplitudes. Numerical results indicate that the failure pattern is similar to those under static loading when the amplitude of stress wave is relatively low. With increment of amplitude of stress wave, the other two different failure patterns are also achieved. By contrast to static loading condition, more cracks initiate and propagate under dynamic loading, which cause the damage and fracture of whole rock specimen.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2005年第1期1-7,共7页
Chinese Journal of Rock Mechanics and Engineering
基金
国家自然科学基金重大项目(50490274)
国家自然科学基金资助项目(50174013
5020400350134040)
东北大学留学归国人员启动基金资助项目(851043)
关键词
岩石力学
数值模拟
破裂过程
动态载荷
Crack propagation
Fracture
Loading
Numerical methods
Rock mechanics
Simulation
