A Simple Elastic Constitutive Equation for Granular Material.

摘要

In the past or until recently the majority of stress-deformation and stability analyses have been restricted to ideal material behavior. Such idealizations in material properties and geometrical conditions may lead to divergence between observed and predicted behavior. Realistic stress and deformation analyses of homogeneous earth masses or soil-structure interaction problems using numerical techniques such as the finite element and finite difference methods require the formulation of a constitutive model for the soil and structural materials. A literature review made in this study indicated that most procedures used in modeling soils are based on the theory of elasticity and curve fitting. (This study is limited to constitutive models which are based on theory of elasticity). Linear,bilinear, trilinear,and hyperbolic models provide,under special conditions,good agreement between observed and predicted soil behavior. (Modified author abstract)