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Two-mesh refinement indicators and adaptivity in non-linear explicit finite element analysis of shells using LS-DYNA
Hållfasthetslära Tekniska fakultetet.
Linköping University, The Institute of Technology. Linköping University, Department of Mechanical Engineering, Solid Mechanics.
2000 (English)In: International Journal for Numerical Methods in Engineering, ISSN 0029-5981, E-ISSN 1097-0207, International Journal for Numerical Methods in Biomedical Engineering, ISSN 2040-7939, Vol. 16, no 11, 785-800 p.Article in journal (Refereed) Published
Abstract [en]

Two-mesh refinement indicators based on the gradients of effective stresses and effective plastic strains, respectively, are proposed for adaptive finite element analysis of the large deformation, materially non-linear dynamic response of shells. The refinement strategy consists of equi-distributing the variation of stresses or plastic strains over the elements of the mesh. A program module for implementing these refinement indicators has been developed and coupled with the general non-linear finite element explicit code LS-DYNA. Numerical examples including both material and geometric non-linearities are presented. It is shown that these indicators can effectively identify those finite elements, which have high gradients of stresses and strains so that the mesh is refined in the region's undergoing the most severe deformations.

Place, publisher, year, edition, pages
2000. Vol. 16, no 11, 785-800 p.
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-35524DOI: 10.1002/1099-0887(200011)16:11<785::AID-CNM376>3.0.CO;2-8Local ID: 27434OAI: diva2:256372
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2011-03-25

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Nilsson, Larsgunnar
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The Institute of TechnologySolid Mechanics
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ReferencesLink to record
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