Out of Plane Lower Bound Limit Analysis

Abstract

The paper provides a novel Lower Bound (LB) Limit Analysis (LA) Finite Element (FE) model for the study at failure of masonry walls in two-way bending by means of full 3D elements. The method of hexahedral discretization is used, while assuming infinite resistance and a quadrilateral interface where all plastic dissipation occurs. It can more accurately analyze the collapse mechanism of masonry panels in the process of two-way bending. It chose two cases to study. They are three series of panels with and without perforations tested at collapse at the University of Adelaide Australia and four series of solid and perforated panels tested at the University of Plymouth UK. The feasibility of the research method was verified. The obtained research results show that the use of the method proposed allows to provide a safe prediction of the existing LA code based on kinematics theorem, with a small computational burden, and the obtained results are more in line with the actual situation and have better practical effects.T The original abstract is titled: 'Out of Plane Lower Bound Limit Analysis'