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首页> 外文期刊>International Journal of Rock Mechanics and Mining Sciences >Combined identification of constitutive parameters and in-situ stresses for an elastic Cosserat model of an excavation in a layered rock mass
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Combined identification of constitutive parameters and in-situ stresses for an elastic Cosserat model of an excavation in a layered rock mass

机译：层状岩体中开挖弹性Cosserat模型的本构参数和现场应力的组合识别

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摘要

This paper presents a numerical model to identify the unknown equivalent constitutive parameters and in-situ stress in elastic layered rock mass formulated by the Cosserat theory singly/simultaneously. In comparison with the identification procedure for the classical elastic model, the major difference of the proposed model comes from the increase of unknowns with the appearance of constitutive parameters describing couple stress. Numerical example indicates that such a difference seems not to cause a distinct impact on the identification process conducted using a conventional Gauss-Newton technique. The results obtained encourage authors to make further effort to improve on the proposed model for its real application in practical engineering.
机译：本文提出了一个数值模型，用于识别由Cosserat理论单独或同时确定的弹性层状岩体中未知的等效本构参数和地应力。与经典弹性模型的识别程序相比，该模型的主要区别在于未知数的增加以及描述耦合应力的本构参数的出现。数值示例表明，这种差异似乎不会对使用常规高斯-牛顿技术进行的识别过程产生明显影响。获得的结果鼓励作者进一步努力对所提出的模型进行改进，使其在实际工程中得到实际应用。

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