Abstract
This study is devoted to a micro-macro model of plastic deformation in a clayey rock which is composed of a ductile porous clay matrix and linear elastic mineral grains. By making use of nonlinear homogenization methods with a two-step homogenization procedure, we derive a closed form expression of the macroscopic plastic criterion which accounts for the effects of pores and of mineral inclusions simultaneously. Then, a non-associated flow rule is proposed. Comparisons between the predictions of the full micro-macro model and available experimental data show that the proposed model is able to capture the main features of the mechanical behavior of the clayey rock.
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References
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Shen, W., Shao, J., Kondo, D. (2013). A Simplified Model for Clayey Rocks Having a Plastic Porous Matrix. In: Yang, Q., Zhang, JM., Zheng, H., Yao, Y. (eds) Constitutive Modeling of Geomaterials. Springer Series in Geomechanics and Geoengineering. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-32814-5_37
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DOI: https://doi.org/10.1007/978-3-642-32814-5_37
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-32813-8
Online ISBN: 978-3-642-32814-5
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