Two-mesh refinement indicators and adaptivity in non-linear explicit finite element analysis of shells using LS-DYNA
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
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.
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-35524DOI: 10.1002/1099-0887(200011)16:11<785::AID-CNM376>3.0.CO;2-8Local ID: 27434OAI: oai:DiVA.org:liu-35524DiVA: diva2:256372