CDPM2: A damage-plasticity approach to modelling the failure of concrete

TL;DR

This paper introduces CDPM2, a damage-plasticity model that effectively captures the failure behavior of concrete under various multiaxial loadings, aligning well with experimental data.

Contribution

It presents a novel combined damage and plasticity model for concrete failure analysis, improving prediction accuracy for different loading conditions.

Findings

Accurately predicts concrete strength increase with confinement

Models tensile and compressive failure effectively

Aligns well with experimental results across loading scenarios

Abstract

A constitutive model based on the combination of damage mechanics and plasticity is developed to analyse the failure of concrete structures. The aim is to obtain a model, which describes the important characteristics of the failure process of concrete subjected to multiaxial loading. This is achieved by combining an effective stress based plasticity model with a damage model based on plastic and elastic strain measures. The model response in tension, uni-, bi- and triaxial compression is compared to experimental results. The model describes well the increase in strength and displacement capacity for increasing confinement levels. Furthermore, the model is applied to the structural analyses of tensile and compressive failure.