Plasticity based approach for failure modelling of unreinforced masonry

Kumar, N and Amirtham, Rajagopal and Pandey, M (2014) Plasticity based approach for failure modelling of unreinforced masonry. Engineering Structures, 80. pp. 40-52. ISSN 0141-0296

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In this work, a plasticity based composite interface model is proposed for failure analysis of unreinforced masonry. The hyperbolic composite interface model consists of a single surface yield criterion, which is a direct extension of Mohr-Coulomb criteria with cut in tension region and a cap in compression region. The inelastic behaviour includes potential crack, slip, and crushing of the masonry joints. A micro mechanical based approach is adopted for failure modelling of the masonry. The model is developed by using a fully implicit backward-Euler integration strategy. It is combined with a local/global Newton solver, based on a consistent tangent operator compatible with an adaptive sub stepping strategy. The model is implemented in standard finite element software (ABAQUS) by using user defined subroutine and verification is conducted in all its basic modes. Finally, the model is validated by comparing with experimental results available in the literature.

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IITH Creators:
IITH CreatorsORCiD
Amirtham, RajagopalUNSPECIFIED
Item Type: Article
Uncontrolled Keywords: Masonry modelling; Plasticity; Composite interface model; Failure criteria
Subjects: Civil Engineering > Soil Structure Interaction
Divisions: Department of Civil Engineering
Depositing User: Team Library
Date Deposited: 18 Nov 2014 09:01
Last Modified: 29 Aug 2017 10:38
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