Research on the equivalent stiffness damping creep model and its simulation application
XIN Songhe
Abstract：The creep of rock is an important factor leading to long-term failure such as uneven settlement of engineering structures.In order to study the creep model that can be applied in the numerical software PFC,the isorigid stagnation model of rock is established by using elastic elements,viscous elements and power-law reduction elements.The particle contact properties were updated by looping,the model was applied to the PFC software,and uniaxial creep experiments were carried out at four stress levels to verify the model.The results show that the stiff stagnation model can better reflect the whole process of creep of rock-like materials,and is suitable for the application of PFC.
Keywords：creepequivalent stiffnessconstitutive modelPFCDEM
Publication Date：2025-06-25
Pages：4( 12-15 )