Nonlinear finite element modelling of unreinforced masonry walls with openings subjected to in-plane shear

This paper presents a numerical investigation into the behaviour of unreinforced clay brick masonry walls with window and door type openings, subjected to in-plane loads. Nonlinear finite element simulations of full scale walls experimentally tested at The University of Newcastle have been undertaken using the commercial finite element analysis software TNO DIANA. In this study, both continuum (total strain fixed-crack) and simplified micro-model (crack-shear-crush) nonlinear finite element modelling strategies have been employed and key parameters including force versus displacement curves, failure modes, and damage patterns have been compared to experimental results.