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