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Numerical modelling of rock materials with polygonal finite elements

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Details

Original languageEnglish
Pages (from-to)216-219
Number of pages4
JournalRakenteiden mekaniikka
Volume50
Issue number3
DOIs
Publication statusPublished - 21 Aug 2017
Publication typeA1 Journal article-refereed

Abstract

This article presents some preliminary results on numerical modeling of rock materials with polygonal finite elements. A method to describe the rock microstructure based on Voronoi diagrams, representing the rock grain texture, is sketched. In this method, the minerals constituting the rock are represented as Voronoi cells which themselves are polygonal finite elements. A three-point bending problem under plane stress linear elasticity condition is solved in order to compare the performance of polygonal elements to ordinary finite elements. Moreover, it is demonstrated by solving the stress state in uni-axial compression that the heterogeneity described with the present method results in short-range tensile stresses which could initiate mode-I cracks.

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Field of science, Statistics Finland

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