依据变形等效原理，建立了层面影响带的粘弹性参数的反分析模型。
Based on equivalent deformation assumption the back analysis model of determining the viscoelastic parameters of the effect zones is established.
本文根据逆过程法的基本原理，导出了以边界元法为基础的粘弹性位移反分析公式，并将其与以有限元法为基础的基本公式作了比较。
The back analysis formulas of viscoelastic displacements are derived from BEM according to the fundamental principle of inverse process, and it is compared with FEM ba formulas.
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