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Failure criteria for quasi-brittle materials in lattice-type models

Lookup NU author(s): Dr Colin Davie

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Abstract

Failure criteria for quasi-brittle materials are considered in the context of a lattice-type modelling framework. The criteria are implemented and assessed in macro-scale lattice-type models realised through bonded, linked particle assemblies constructed in a DEM framework. Several simple strategies consider failure of individual lattice elements based either on the local conditions at link elements or on the homogenized conditions at an associated continuum point, with both elastic-brittle and elastic- softening plasticity models employed. In spite of observed solution noise, model performance in coarse, macro-scale triangular lattice-type assemblies supports the importance of including both softening and homogenized failure criteria in order to objectively reproduce softening behaviour of an equivalent continuum.


Publication metadata

Author(s): Davie CT, Bicanic N

Publication type: Article

Publication status: Published

Journal: Communications in Numerical Methods in Engineering

Year: 2003

Volume: 19

Issue: 9

Pages: 703-713

ISSN (print): 1099-0887

ISSN (electronic): 2040-7947

Publisher: John Wiley & Sons Ltd.

URL: http://dx.doi.org/10.1002/cnm.626

DOI: 10.1002/cnm.626

Notes: Special Issue: 10th Anniversary Conference of ACME-UK


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