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Prediction of solid block masonry prism compressive strength using FE model

Vyas, Uday Ch V and Reddy, Venkatarama BV (2010) Prediction of solid block masonry prism compressive strength using FE model. In: Materials and Structures / Materiaux et Constructions, 43 (5). pp. 719-735.

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Masonry strength is dependent upon characteristics of the masonry unit,the mortar and the bond between them. Empirical formulae as well as analytical and finite element (FE) models have been developed to predict structural behaviour of masonry. This paper is focused on developing a three dimensional non-linear FE model based on micro-modelling approach to predict masonry prism compressive strength and crack pattern. The proposed FE model uses multi-linear stress-strain relationships to model the non-linear behaviour of solid masonry unit and the mortar. Willam-Warnke's five parameter failure theory developed for modelling the tri-axial behaviour of concrete has been adopted to model the failure of masonry materials. The post failure regime has been modelled by applying orthotropic constitutive equations based on the smeared crack approach. Compressive strength of the masonry prism predicted by the proposed FE model has been compared with experimental values as well as the values predicted by other failure theories and Eurocode formula. The crack pattern predicted by the FE model shows vertical splitting cracks in the prism. The FE model predicts the ultimate failure compressive stress close to 85 of the mean experimental compressive strength value.

Item Type: Journal Article
Publication: Materials and Structures / Materiaux et Constructions
Publisher: Springer
Additional Information: Copyright of this article belongs to Springer.
Keywords: Masonry;Finite element method;Three-dimensional models; Compressive strength
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Date Deposited: 03 Jun 2010 06:13
Last Modified: 19 Sep 2010 06:07
URI: http://eprints.iisc.ac.in/id/eprint/28157

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