岩石介质变模量帽盖模型的弹塑性本构关系

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The Elastoplastic Constitutive Relation of Generalized Cap Model for Rock Medium

摘要: 本文用连续介质力学的理论分析了岩石屈服前的性状,导出了岩石介质的非线性弹性的本构方程,并与实验资料进行了比较,二者十分接近.进而用非线性弹性取代一般帽盖模型中关于弹性区的线弹性假设,导出了非线性弹性—塑性硬化的帽盖模型.

Abstract: In this paper, the rock behavior before yielding is analyzed by using the theory of continuum mechanics. The nonlinearly elastic constitutive equation of rock medium is derived and compared satisfactorily with the available experimental data. Moreover, the substitution of the linearly elastic hypothesis used in the conventional cap model with the nonlinearly elastic one leads to the development of a new nonlinearly elastic-hardening plastic cap model as presented herein.

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