Density Driven Damage Mechanics (D3-M) Model for Concrete I: mechanical damage

Published

July 6, 2022

Author(s)

Pavitra Murrua, Christa Torrence, Zachary Grasley, KR Rajagopal, P Alagappan, Edward Garboczi

Abstract

Damage in concrete has been modeled using various approaches such as fracture mechanics, continuum damage mechanics and failure envelope theories. This study proposes a new theory to model damage in concrete that addresses the limitations associated with the existing approaches. The proposed theory defines damage in terms of changes in the density of the material at a microscopic level where such changes are induced by mechanical loading. The suggested theory is used to simulate the response of 2D concrete models to uniaxial tension and uni-axial compression. The simulation results indicate that the proposed model, by means of a single constitutive function, is able to correctly predict failure patterns and aptly capture the damage mechanisms under both uni-axial tension and uni-axial compression loadings using only the information related to the microstructure, the density field and the stiffness field.

Citation

Cement and Concrete Composites

Volume

23

Issue

4

Pub Type

Journals

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DOI Link

Keywords

Damage, Concrete, Fracture Mechanics, Continuum Damage Mechanics, Density

Citation

Murrua, P. , Torrence, C. , Grasley, Z. , Rajagopal, K. , Alagappan, P. and Garboczi, E. (2022), Density Driven Damage Mechanics (D3-M) Model for Concrete I: mechanical damage, Cement and Concrete Composites, [online], https://doi.org/10.1080/10298436.2020.1793983 (Accessed July 25, 2024)