STRESS RATE-ELASTIC STRETCHING RELATIONS IN ELASTOPLASTIC CONSTITUTIVE EQUATIONS FOR SOILS

摘要

Research on the elastoplastic constitutive equations of soils has a long history. An elastic constitutive equation in a rate form is a key component of the full elastoplastic constitutive equation. However, a fully satisfactory elastic con- stitutive equation has yet to be found; it remains an unsolved problem although it would seem to be quite simple. In this article a physically acceptable, yet simple elastic constitutive equation for soils in rate form is proposed and incor- porated in the subloading surface model.