中国地质大学：《构造地质学》课程PPT教学课件（英文版）Lecture 23 mechanical behavior of rocks

did du_d du_dr dy dy( dt)dt( dy)at r Shear strain rate y--shear strain

—剪应变速率     = =          =      = dt d dy du dt d dt du dy d dy du Shear strain rate dy du  --shear strain

Another express for Newtonian viscous law I=ny In--viscosity of material Shear stress is proportional to shear strain-rate o Stress o, dsdt For longitudinal deformation train-rate

 =  Another express for Newtonian viscous law Shear stress is proportional to shear strain-rate --viscosity of material For longitudinal deformation:  = d/dt  d/dt Stress Strain-rate