Mesoscale analysis of failure in quasi-brittle materials: comparison between lattice model and acoustic emission data - Archive ouverte HAL
Journal Articles International Journal for Numerical and Analytical Methods in Geomechanics Year : 2015

Mesoscale analysis of failure in quasi-brittle materials: comparison between lattice model and acoustic emission data

Abstract

The purpose of this paper is to analyse the development and the evolution of the fracture process zone during fracture and damage in quasi-brittle materials. A model taking into account the material details at the mesoscale is used to describe the failure process at the scale of the heterogeneities. This model is used to compute histograms of the relative distances between damaged points. These numerical results are compared with experimental data, where the damage evolution is monitored using acoustic emissions. Histograms of the relative distances between damage events in the numerical calculations and acoustic events in the experiments exhibit good agreement. It is shown that the mesoscale model provides relevant information from the point of view of both global responses and the local failure process.
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Dates and versions

hal-01157977 , version 1 (10-10-2024)

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David Grégoire, Laura Verdon, Vincent Lefort, Peter Grassl, Jacqueline Saliba, et al.. Mesoscale analysis of failure in quasi-brittle materials: comparison between lattice model and acoustic emission data. International Journal for Numerical and Analytical Methods in Geomechanics, 2015, pp.10.1002/nag.2363. ⟨10.1002/nag.2363⟩. ⟨hal-01157977⟩
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