ABSTRACT

This article presents an egg-shaped smooth yield function for non-linear analysis in geotechnics. This suggested yield function could be used to simulate the softening as well as hardening behaviour of soils. The yield surface based on this egg-shaped function has no irregularities, so that there is no need for special treatments in numerical procedures. This article will present the formulation and description of the function, determination of parameters and its potential application in geotechnical analysis.