最近几年来,连续损伤力学的观点已开始被应用于岩石类材料的破坏断裂的研究。本文将岩石视为具有内在微细裂隙的损伤材料,来模拟其应变软化效应。首先,在拖带坐标系中建立了损伤热力学公式和有限变形损伤模型。并从微观分析到宏观现象,由模糊概率测度思想提出了岩石损伤累积方程。最后,由实验数据证明:本文的损伤模型对岩石应变软化效应的模拟是合理的。 In recent years, the view of continuous damage mechanics has begun to be applied to the study of destructive fracture of rock materials. In this paper, rock is regarded as a damage material with intrinsic fine cracks to simulate its strain softening effect. First, the damage thermodynamic formula and finite deformation damage model are established in the dragging coordinate system. From the microscopic analysis to the macroscopic phenomena, the cumulative damage equation of rock was proposed by the idea of ​​fuzzy probability measurement. Finally, the experimental data prove that the damage model of rock in this paper is reasonable for the simulation of rock strain softening effect.