Authors: Huang, W; Sheng, D

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Huang, W & Sheng, D 2008, 'Quantitative Modelling of Granular Soils in Hypoplasticity', in Y Potvin, J Carter, A Dyskin & R Jeffrey (eds), SHIRMS 2008: Proceedings of the First Southern Hemisphere International Rock Mechanics Symposium, Australian Centre for Geomechanics, Perth, pp. 513-521,

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Hypoplasticity is a relatively new framework for constitutive modelling of granular materials. In this paper a revision of the hypoplastic model for sand formulated by Gudehus and Bauer is proposed. The original model can reproduce qualitatively the main features of the behaviour of sand-like granular materials for a wide stress and density range. But the model is not able to capture quantitatively the stress ratio and volumetric strain simultaneously, particularly for dense sand. The revision is made by a slight modification of the formulation and introduction of a stress transformation. Numerical results are presented to demonstrate the improvement of the model performances.

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