Abstract: The mathematical foundation of the general bounding surface constitutive formulation in plasticity is presented. Along these lines the concept of hypoplasticity is formally introduced, and it is shown that a particular ...

Abstract: The kinematics and kinetics of a planar double‐slip system are used to model the response of a single crystal in plane large plastic deformations. Based on the kinematics of the double‐slip element, the orientation ...

Abstract: The validity of objectivity or frame-indifference in turbulence is examined simultaneously from the dual perspective of change of reference frame and superposed rigid-body motion. Similarities and differences arising from ...

Abstract: The definition of a corotational integral is formally introduced. Such definition is the counterpart of the definition of a corotational derivative and requires the introduction of an orthogonal tensor which corresponds ...

Abstract: The objective of this paper is to present a number of simple, practical, and useful analytical expressions of a yield surface for geomaterials. In classical plasticity, the analytical expression of a yield surface defines ...

Abstract: A rate‐independent elasto‐plastic bounding surface constitutive model applicable to anisotropic cohesive soils is presented. It is shown that the theory is capable of realistically accounting for the initial anisotropy and ...

Abstract: A plasticity constitutive framework for modeling inherently anisotropic sand behavior is presented within a modified form of critical state soil mechanics. A second-order symmetric fabric tensor,

Abstract: Directional distortion, observed in many experiments on various types of metals, refers to the formation of a region of high curvature (sharpening) on the yield surface approximately in the direction of loading, and a ...

Abstract: A simple stress-ratio controlled, critical state compatible, sand plasticity model is presented, first in the triaxial and then in generalized stress space. The model builds upon previous work of the writers, albeit the ...