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Stress concentration in sparse lattice structures

By Bastien Ravot

Abstract

This report presents numerical results obtained through MATLAB simulations aiming at characterising the singularity of the stresses at a crack tip in a sparse, regular, linear elastic structure. The simulation algorithm is explained and validated by the recovery of the square-root singularity predicted by the LEFM theory for some lattices that can be seen as discrete models of a linear elastic isotropic material. Deviations from this theory are noted for more complex lattice

Year: 2020
OAI identifier: oai:infoscience.epfl.ch:273958
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