花岗岩动三轴抗压强度的裂纹模型研究(I):理论基础

Study on dynamic triaxial compressive strength of a granite using sliding crack model(Ⅰ):theory

简要地介绍了岩石材料在压应力作用下的裂纹模型。应用虚拟力方法(Pseudo-tractionmethod)考虑2阶虚拟力情形,求解裂纹组应力强度因子表达式,为岩石动三轴抗压强度的裂纹模型研究提供理论基础。

A crack model of rock material under compression is established.By using the Pseudo -traction method and considering second order of Pseudo-traction,the stress intensity factor of the crack array is determined.The study provides the basic information for simulating rock strength under dynamic compression.