Atomistic simulation of cracks versus generalized continua

Mahmoud Mousavi, Julien Guénolé, Polina Baranova, Erik Bitzek, Alexander M. Korsunsky

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Classical fracture theory is formulated within classical continuum mechanics and possess singularities at the dislocation cores as well as crack tips. A number of generalized continuum theories successfully regularize the field quantities such as stress and/or strain. Nevertheless, these generalized theories should be selected carefully, in fact to improve our fracture theory towards realistic situations. Validation with experimental observations as well as numerical experiments can guide us through this selection. Atomistic simulation is capable of providing us details of the field quantities at the vicinity of crack tips. In this presentation, we compare quantities such as the stress field of a crack within nonlocal and gradient elasticity theories with results from atomistic simulations. Besides qualitative agreement, such comparisons can also provide tools to evaluate the internal length scale parameters of the generalized continua.

Original languageEnglish
Title of host publicationICF 2017 - 14th International Conference on Fracture
EditorsEmmanuel E. Gdoutos
PublisherInternational Conference on Fracture
Pages259-260
Number of pages2
ISBN (Electronic)9780000000002
Publication statusPublished - 2017
Externally publishedYes
Event14th International Conference on Fracture, ICF 2017 - Rhodes, Greece
Duration: 18 Jun 201720 Jun 2017

Publication series

NameICF 2017 - 14th International Conference on Fracture
Volume1

Conference

Conference14th International Conference on Fracture, ICF 2017
Country/TerritoryGreece
CityRhodes
Period18/06/1720/06/17

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