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Embedded discontinuities for softening solids


Type

Conference Object

Change log

Authors

Wells, GN 
Sluys, LJ 

Abstract

Additional, discontinuous functions are added to the displacement field of standard finite elements in order to capture highly localised zones of intense straining. By embedding discontinuities within an element it is possible to effectively model localisation phenomena (such as fracture in concrete) with a relatively small number of finite elements. The displacement jump is regularised, producing bounded strains and allowing the application of classical strain softening constitutive laws. It is then possible to achieve mesh-objective results with respect to energy dissipation without resorting to higher-order continuum theories.

Description

Keywords

localisation, embedded discontinuity, strong discontinuity, enhanced strain, fracture, softening, damage, plasticity

Journal Title

Proceedings of the 4th Asia-Pacific Conference on Computational Mechanics (APCOM '99)

Conference Name

4th Asia-Pacific Conference on Computational Mechanics (APCOM '99)

Journal ISSN

Volume Title

1

Publisher

Elsevier

Publisher DOI

Publisher URL