Volume 8, Number 2 (6-2010) | IJCE 2010, 8(2): 143-158 | Back to browse issues page

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Sadrnejad S A, Ghoreishian Amir S A. A Simple Unconventional Plasticity Model Within the Multilaminate Framework. IJCE. 2010; 8 (2) :143-158
URL: http://ijce.iust.ac.ir/article-1-456-en.html

Abstract:   (7638 Views)

A semi-micromechanical multilaminate model is introduced here to predict the mechanical behavior of soils.

This model is like a bridge between micro and macro scale upon the satisfaction of minimum potential energy level

during any applied stress/strain increments. The concept of this model is based on a certain number of sampling planes

which constitute the elastic-plastic behavior of the soil. The soil behavior presents as the summation of behavior on

these planes. A simple unconventional constitutive equations are used in each of the planes to describe the behavior

of these planes separately. An unconventional plasticity can predict the soil behavior as a smooth curve with

considering plastic deformation due to change of stress state inside the yield surface. The model is capable of

predicting softening behavior of the soil in a reasonable manner due to using unconventional plasticity. The influences

of induced anisotropy are included in a rational way without any additional hypotheses owing to in-nature properties

of the multilaminate framework. Results of this model are compared with test data and reasonable agreement is found.

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Type of Study: Research Paper | Subject: Seismic Geotechnique

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