Isogeometric shape optimization of trimmed shell structures

Cited 23 time in webofscience Cited 0 time in scopus
  • Hit : 370
  • Download : 0
DC FieldValueLanguage
dc.contributor.authorKang, Pilseongko
dc.contributor.authorYoun, Sung-Kieko
dc.date.accessioned2016-07-04T01:54:25Z-
dc.date.available2016-07-04T01:54:25Z-
dc.date.created2016-04-27-
dc.date.created2016-04-27-
dc.date.issued2016-04-
dc.identifier.citationSTRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION, v.53, no.4, pp.825 - 845-
dc.identifier.issn1615-147X-
dc.identifier.urihttp://hdl.handle.net/10203/208740-
dc.description.abstractIn most of structural analyses and optimizations using the conventional isogeometric analysis, handling of trimmed or topologically complex geometries is difficult and awkward. A trimmed or topologically complex geometry is normally modeled with multiple untrimmed patches due to the tensor-product form of a Non-Uniform Rational B-Spline (NURBS) surface, and then the patches are put together for analysis. In the present work, the isogeometric shape optimization of trimmed shell structures using the information of trimmed NURBS surfaces is proposed. To treat the trimmed shell structures efficiently, two-dimensional Trimmed Surface Analysis (TSA) which is the isogeometric approach for treating a topologically complex geometry with a single patch is extended and adopted to the analysis and optimization of shell structures. Not only the coordinates of shell surface control points, but also the coordinates of trimming curve control points are chosen as design variables so that the curvatures of shell surface as well as the trimmed boundaries can be varied during the optimization. The degenerated shell based on Reissner-Mindlin theory is formulated with exact direction vectors and their analytic derivatives. Method of Moving Asymptotes (MMA) is used as the optimization algorithm, and the shape sensitivities with respect to the coordinates of surface control points and trimming curve control points are formulated with exact direction vectors and their analytic derivatives. The developed sensitivity formulations are validated by comparing with the results of Finite Difference Method (FDM), and they show excellent agreements. Numerical examples are treated to confirm the ability of the proposed approach-
dc.languageEnglish-
dc.publisherSPRINGER-
dc.subjectTOPOLOGY OPTIMIZATION-
dc.subjectFINITE-ELEMENTS-
dc.subjectDESIGN-
dc.subjectNURBS-
dc.subjectFORM-
dc.subjectFORMULATION-
dc.subjectSURFACES-
dc.subjectSOLIDS-
dc.subjectLAYOUT-
dc.subjectCAD-
dc.titleIsogeometric shape optimization of trimmed shell structures-
dc.typeArticle-
dc.identifier.wosid000373023800012-
dc.identifier.scopusid2-s2.0-84947734401-
dc.type.rimsART-
dc.citation.volume53-
dc.citation.issue4-
dc.citation.beginningpage825-
dc.citation.endingpage845-
dc.citation.publicationnameSTRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION-
dc.identifier.doi10.1007/s00158-015-1361-6-
dc.contributor.localauthorYoun, Sung-Kie-
dc.type.journalArticleArticle-
dc.subject.keywordAuthorIsogeometric shape optimization-
dc.subject.keywordAuthorReissner-Mindlin shell-
dc.subject.keywordAuthorTrimmed NURBS surfaces-
dc.subject.keywordAuthorExact direction vectors-
dc.subject.keywordAuthorTrimmed shell structures-
dc.subject.keywordPlusTOPOLOGY OPTIMIZATION-
dc.subject.keywordPlusFINITE-ELEMENTS-
dc.subject.keywordPlusDESIGN-
dc.subject.keywordPlusNURBS-
dc.subject.keywordPlusFORM-
dc.subject.keywordPlusSURFACES-
dc.subject.keywordPlusLAYOUT-
dc.subject.keywordPlusCAD-
Appears in Collection
ME-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 23 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0