Research on Simulation Method of Rock Deformation Failure Process under Dynamic Load
The dynamic deformation process of rock is significantly affected by confining pressure and strain rate.This paper first analyzes the correlation among medium and high strain rate,stress level,dynamic mechanical characteristics of rock,and puts forward a rock micro-el-ement model,which reflects the static stress component and the dynamic inertial stress component by the damaged elastomer and the viscous body respectively.Then,based on the statistical damage theory and the mechanical char-acteristics of the viscous body,the stress-strain compo-nent relationship between the damaged elastomer and the viscous body is determined,and the dynamic combined statistical damage constitutive model is obtained.Finally,it is concluded that the model can reflect the influence of medium and high strain rates on rock deformation,and has certain advantages.
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