This paper presents a complete theory for metal plasticity that includes isotropic, kinematic,
and directional distortional hardening, within the framework of thermodynamics. Directional …

Presented is an energy dissipation analysis framework for granular material that is based on
thermodynamics. Theoretical formulations are derived from the second law of …

Ratcheting is defined as the accumulation of plastic strains during cyclic plastic loading.
Modeling this behavior is extremely difficult because any small error in plastic strain during a …

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 …

A new model of metal viscoplasticity, which takes combined isotropic, kinematic, and
distortional hardening into account, is presented. The basic modeling assumptions are …

Presented is a thermodynamics based methodology for computing energy dissipation in
inelastic beam-column elements. Theoretical formulation for energy storage and dissipation …

Plastic anisotropy may strongly affect the stress and strain response in metals subjected to
multiaxial cyclic loading. This anisotropy evolves due to various microstructural features. We …

Modeling and simulation of earthquake soil-structure interaction (ESSI) requires number of
sophisticated modeling and simulation approaches in order to reduce modeling uncertainty …

The present paper examines the convexity of the yield surface in the directional distortional
hardening models by Feigenbaum and Dafalias. In these models anisotropy develops …

This study aims at introducing the back stress of anisotropic strain-hardening into the crystal
plasticity theory and demonstrating the rationality of this crystal plasticity model to describe …