Microplane Model for Brittle‐Plastic Material: I. Theory

Publisher Website
Google Scholar
Abstract
A generalized microplane model for brittle‐plastic heterogeneous materials such as concrete, which describes not only tensile cracking but also nonlinear triaxial response in compression and shear, is presented. The constitutive properties are characterized separately on planes of various orientations within the material, called the microplanes, on which there are only few stress and strain components and no tensorial requirements need to be observed. These requirements are satisfied automatically by integration over all spatial directiohs. The state of each microplane is characterized by normal deviatoric and volumetric strains and shear strain, which makes it possible to match any Poisson ratio. The microplane strains are assumed to be the resolved components of the macroscopic strain tensor. The central assumption is that on the microplane level the stress‐strain diagrams for monotonic loading are path‐independent and that all the path dependence on the macrolevel is due to unloading, which happens sel...

This publication has 17 references indexed in Scilit: