Thus, a nonlinear viscoelastic constitutive relation for cement mortar based on standard linear solid model considering the evolution of the damage internal variable is established accordingly.

据此，在标准线性固体模型的基础上，考虑损伤内变量的演化，建立了应变率相关的水泥砂浆的非线性黏弹性损伤模型。

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This work establishes a new constitutive relation on the azimuthally anisotropic linear viscoelastic media with an arbitrary azimuthal angle for the fractured strata.

针对裂缝性地层的裂缝发育方位问题，建立具有任意方位角的方位各向异性黏弹性本构关系。

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Based on the asymptotic homogenization method a global three-dimensional constitutive relation for viscoelastic FRC was formulated.

通过渐近均匀化方法给出了预测FRC整体三维本构关系的解析表达式。

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