A finite element modelling method for thin layer mortared masonry systems
2014
This paper deals with a finite element modelling method for thin layer mortared masonry
systems. In this method, the mortar layers including the interfaces are represented using a zero
thickness interface element and the masonry units are modelled using an elasto-plastic, damaging
solid element. The interface element is formulated using two regimes; i) shear-tension and ii) shearcompression.
In the shear-tension regime, the failure of joint is consiedered through an eliptical failure
criteria and in shear-compression it is considered through Mohr Coulomb type failure criterion. An
explicit integration scheme is used in an implicit finite element framework for the formulation of the
interface element. The model is calibrated with an experimental dataset from thin layer mortared
masonry prism subjected to uniaxial compression, a triplet subjected to shear loads a beam subjected
to flexural loads and used to predict the response of thin layer mortared masonry wallettes under
orthotropic loading. The model is found to simulate the behaviour of a thin layer mortated masonry shear wall tested under pre-compression and inplane shear quite adequately. The model is shown to
reproduce the failure of masonry panels under uniform biaxial state of stresses.
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