Abstract:In this study, based on the variable-order fractional theory and continuous damage model with sum function, we proposed a nonlinear variable-order fractional damage creep model to describe the creep mechanical behavior of rock materials. For better exhibiting the evolution of consumption of viscosity in creep, the 'two-area-continuous-variableorder-analytical-method' is first presented. In different areas of creep (area 1 and 2), the consumption of viscosity in each area is expressed by the varying-order with … Show more
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