Nonlinear modulus of rock is function of strain level and strain amplitude.The modulus decays exponentially with ascending of strain amplitude, while increases with strain level increasing.

 
  • 岩石非线性模量既是所受应变水平的函数,也是应变振幅的函数,模量随应变振幅的增加以指数形式下降,随应变水平增加以指数形式上升。
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