dc.contributor.author | Reyes, Aase Gavina Roberg | |
dc.contributor.author | Hopperstad, Odd Sture | |
dc.contributor.author | Berstad, Torodd | |
dc.contributor.author | Lademo, Odd-Geir | |
dc.date.accessioned | 2018-03-12T11:56:15Z | |
dc.date.available | 2018-03-12T11:56:15Z | |
dc.date.created | 2010-01-07T15:19:19Z | |
dc.date.issued | 2009 | |
dc.identifier.isbn | 3-9809901-5-X | |
dc.identifier.uri | http://hdl.handle.net/11250/2490096 | |
dc.description.abstract | In this study, LS-DYNA was used to predict the experimental forming limit diagrams (FLDs) for prestrained sheets in aluminum alloy Al2008-T4 found by Graf and Hosford [1]. The original data of Graf and Hosford [1] includes numerous pre-straining situations, but it was here chosen only to investigate pre-straining by biaxial and uniaxial tension. In order to generate the FLDs, several analyses of a square patch were run systematically to construct the different points. Pre-straining was applied by first stretching a somewhat larger patch to a given pre-strain, and then trimming this patch to the standard square patch. The material model used in the analyses includes two instability criteria; a nonlocal criterion to detect incipient localized necking and a through-thickness shear instability criterion [2-5]. The objective was to study whether the effects of pre-straining on the FLD could be predicted by the chosen modelling approach, and good results were obtained. | nb_NO |
dc.language.iso | eng | nb_NO |
dc.publisher | DYNAmore GmbH | nb_NO |
dc.relation.ispartof | Proceedings. 7th European LS-DYNA Conference | |
dc.title | Forming limit diagrams with an FE-based approach for sheets under non-proportional loading | nb_NO |
dc.type | Chapter | nb_NO |
dc.description.version | publishedVersion | nb_NO |
dc.source.pagenumber | 84-? | nb_NO |
dc.identifier.cristin | 44461 | |
dc.description.localcode | This chapter will not be available due to copyright restrictions (c) 2009 by DYNAmore GmbH | nb_NO |
cristin.unitcode | 194,64,45,0 | |
cristin.unitname | Institutt for konstruksjonsteknikk | |
cristin.ispublished | true | |
cristin.fulltext | original | |