Nonlinear Rock Creep Constitutive Model Based on Energy Entropy Increase Theory
Triaxial creep tests were conducted on sandstone at 25°C–100°C under three‐dimensional stress to investigate temperature‐dependent creep behavior. An entropy‐dependent nonlinear dashpot was developed by relating entropy production to the evolution of viscous resistance, and a local fractal‐order time‐scaling formul...