A Bounding Surface Plasticity Model for Soils with Stress Increment Direction Dependent Plastic Potential

N. Khalili, M. D. Liu
Dept. of Civil Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia
Keywords: bounding surface, constitutive equations, critical state, dilatancy, plasticity, soils.
ABSTRACT: A new, continuous stress direction dependent plastic potential is proposed for the stress strain
behaviour of soils. The resulting flow rule is incorporated into a bounding surface plasticity model within a
critical state framework. The hypoplastic bounding surface model thus formulated is employed to predict both
the compression and shearing behaviour of soil for various stress paths in the p¢ - q plane. It has been
demonstrated that the proposed model describes successfully many important features of the behaviour of
soils for loading along complicated stress paths and has improved significantly the performance of bounding
surface models with a single set of yield surfaces.

A Bounding Surface Plasticity Model for Soils with Stress Increment Direction Dependent Plastic Potential 2011-04-04T19:02:00-07:00 Rating: 4.5 Diposkan Oleh: Andre S