Elasto-plastic modelling of Red Wildmoor sandstone

Jean Sulem, Ioannis Vardoulakis, Euripides Papamichos, Ahmed Oulahna, Johan Tronvoll
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引用次数: 75

Abstract

On the basis of an extensive experimental program of axisymmetric triaxial compression and extension tests, the mechanical behaviour of a weak sandstone (Red Wildmoor sandstone) is analysed and modelled within the frame of the theory of elastoplasticity. Stress-dependent elasticity and damage are incorporated into the model. Pressure sensitivity of the plastic behaviour is described through a non-linear Mohr–Coulomb model with friction hardening and cohesion softening. Emphasis is given on the calibration procedure. Validation of the model is done through back analysis of the experimental tests. Shear-band analysis is performed on the basis of the extension of the constitutive model to non-coaxial plasticity. Copyright © 1999 John Wiley & Sons, Ltd.

Red Wildmoor砂岩的弹塑性建模
在轴对称三轴压缩和拉伸试验的广泛实验程序的基础上,在弹塑性理论的框架内对软弱砂岩(Red Wildmoor砂岩)的力学行为进行了分析和建模。与应力相关的弹性和损伤被纳入模型中。塑性行为的压力敏感性通过具有摩擦硬化和内聚软化的非线性莫尔-库仑模型来描述。重点介绍了校准程序。通过对实验测试的反分析,对模型进行了验证。剪切带分析是在本构模型扩展到非共轴塑性的基础上进行的。版权所有©1999 John Wiley&;有限公司。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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