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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/25963

Title: Finite element analysis of discrete circular dislocations
Authors: Baxevanakis, Konstantinos P.
Giannakopoulos, A.E.
Keywords: Dislocations
Finite elements
Anisotropic elasticity
Issue Date: 2010
Publisher: © Tech Science Press
Citation: BAXEVANAKIS, K.P. and GIANNAKOPOULOS, A.E., 2010. Finite element analysis of discrete circular dislocations. CMES - Computer Modeling in Engineering and Sciences, 60 (2), pp. 181 - 197.
Abstract: The present work gives a systematic and rigorous implementation of (edge type) circular Volterra dislocation loops in ordinary axisymmetric finite elements using the thermal analogue and the integral representation of dislocations through stresses. The accuracy of the proposed method is studied in problems where analytical solutions exist. The full fields are given for loop dislocations in isotropic and anisotropic crystals and the Peach-Koehler forces are calculated for loops approaching free surfaces and bimaterial interfaces. The results are expected to be very important in the analysis of plastic yield strength, giving quantitative results regarding the influence of grain boundaries, interstitial particles, microvoids, thin film constraints and nano-indentation phenomena. The interaction of few dis-locations with various inhomogeneities gives rise to size effects in the yield strength which are of great importance in nano-mechanics.
Description: Closed access. This article was published in the journal, Computer Modeling in Engineering and Sciences [© Tech Science Press]. The author's accepted manuscript includes the figures and the published version does not. An Erratum provides the figures in the published version https://dspace.lboro.ac.uk/2134/25966.
Version: Accepted for publication
DOI: 10.3970/cmes.2010.060.181
URI: https://dspace.lboro.ac.uk/2134/25963
Publisher Link: https://doi.org/10.3970/cmes.2010.060.181
ISSN: 1526-1492
Appears in Collections:Closed Access (Mechanical, Electrical and Manufacturing Engineering)

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