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Modelling of interfacial viscoplastic slip coupled to damage in a polycrystalline microstructure
Jönköping University, School of Engineering, JTH, Mechanical Engineering. Jönköping University, School of Engineering, JTH. Research area Engineering mechanics and optimization.
1997 (English)In: Computational Mechanics, ISSN 0178-7675, E-ISSN 1432-0924, Vol. 20, no 1-2, p. 12-19Article in journal (Refereed) Published
Abstract [en]

The mesomechanics behavior of a polycrystalline microstructure subjected to creep and constant strain rate loadings is investigated. The analysis is based on a Voronoi polygonization strategy for the generation of grains, that are bonded to each other via interfaces along the grain boundaries. A new constitutive model is proposed for the rate-dependent debonding along these interfaces, whereby damage is kinetically coupled to viscoplastic slip and dilatation. The paper may be viewed as generalizing the rate-independent model used in Cannmo et al. (1995).

Place, publisher, year, edition, pages
1997. Vol. 20, no 1-2, p. 12-19
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URN: urn:nbn:se:hj:diva-5038OAI: oai:DiVA.org:hj-5038DiVA, id: diva2:35858
Available from: 2008-01-03 Created: 2008-01-03 Last updated: 2017-12-12Bibliographically approved

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Cannmo, Patrik

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