A single-flow surface model unifying damage mechanics and plasticity is developed for quasi-brittle solids in general and concrete in particular. The necessity of using both plasticity and damage mechanics is discussed, ...

Based on the general macroscopic potential theory, a method to find macroscopic plastic potential and the corresponding constitutive relation is developed for visco-plastic materials containing cylindrical voids. The ...

Recent progress in the formulation of a constitutive model for describing coupled creep and damage development in rock salt is summarized. The constitutive model is based on the assumption that both dislocation slip and ...

A radial return algorithm is developed for large strain elasto-plastic struc tures in order to easily compute microvoid volume fraction rates. The basic feature subroutines are described in detail and forwards four typical ...

Homogenization techniques are utilized herein to construct locally aver aged mechanical constitutive equations for composites. Techniques are first reviewed for elastic composites, followed by a review of elastic composites ...

Interfacial debonding might occur with an increasing tensile load in a unidirectional fiber-reinforced composite. This debonding is assumed to be a significant contributor to increased composite toughness. A model is ...

The present paper deals with the strength and failure properties of adhe sive joints weakened by initial imperfections such as flaws or debonding of the interface. The problem is analyzed by applying the principles of the ...

The paper presents an investigation of mixed-mode ductile fracture for biaxial tension plates containing a central crack of varying inclination angles under non proportional loading. The critical fracture loads at crack ...

Quasi-brittle materials, such as concrete, exhibit plastic deformation and stiffness degradation under applied loading conditions. To predict the mechanical behavior of quasi-brittle materials, it may be necessary to combine ...

This article examines a commonly used micromechanics approach to evolution of damage in composites. In this approach an initial crack pattern is assumed and on the basis of the local stress fields and a (brittle) fracture ...