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Mesoscale Analysis of Fatigue Damage through Aggregate-Mortar Bond Cracks in Cementitious Composites

Dutta, Sudakshina and Kishen, J M Chandra (2020) Mesoscale Analysis of Fatigue Damage through Aggregate-Mortar Bond Cracks in Cementitious Composites. In: JOURNAL OF ENGINEERING MECHANICS, 146 (2).

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Official URL: https:/dx.doi.org/10.1061/(ASCE)EM.1943-7889.00017...


A micromechanics-based model is developed to study the fatigue response of cementitious composites. Microcrack growth, which is the predominant mechanism responsible for fatigue damage, is explicitly modeled at the mesoscale. The damaged state at the macroscopic scale is determined by using energetic criterion. The dissipated energy associated with each stage of microcrack propagation is computed numerically based on the elastic solutions of the stress and displacement quantities at the mesoscale. The model is used to predict the fatigue life of plain concrete beams under fatigue load cycles. The influence of the various properties of the constituent phases on the fatigue life of the composite is investigated through a parametric study.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to ASCE-AMER SOC CIVIL ENGINEERS, 1801 ALEXANDER BELL DR, RESTON, VA 20191-4400 USA
Keywords: Microcracks; Energy dissipation; Fatigue; Mesoscale; Micromechanics; Homogenization; Interface; Cementitious composites
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Date Deposited: 03 Jan 2020 10:39
Last Modified: 03 Jan 2020 10:39
URI: http://eprints.iisc.ac.in/id/eprint/64279

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