Show simple item record

dc.creatorGarcía, Manuel J.
dc.creatorHenao, Miguel A.
dc.creatorRuíz, Óscar E.
dc.date.available2016-11-18T22:27:28Z
dc.date.issued2005
dc.identifier.issn0219-8762spa
dc.identifier.urihttp://hdl.handle.net/10784/9692
dc.descriptionFixed Grid (FG) methodology was first introduced by García and Steven as an engine for numerical estimation of two-dimensional elasticity problems -- The advantages of using FG are simplicity and speed at a permissible level of accuracy -- Two dimensional FG has been proved effective in approximating the strain and stress field with low requirements of time and computational resources -- Moreover, FG has been used as the analytical kernel for different structural optimisation methods as Evolutionary Structural Optimisation, Genetic Algorithms (GA), and Evolutionary Strategies -- FG consists of dividing the bounding box of the topology of an object into a set of equally sized cubic elements -- Elements are assessed to be inside (I), outside (O) or neither inside nor outside (NIO) of the object -- Different material properties assigned to the inside and outside medium transform the problem into a multi-material elasticity problem -- As a result of the subdivision NIO elements have non-continuous properties -- They can be approximated in different ways which range from simple setting of NIO elements as O to complex noncontinuous domain integration -- If homogeneously averaged material properties are used to approximate the NIO element, the element stiffness matrix can be computed as a factor of a standard stiffness matrix thus reducing the computational cost of creating the global stiffness matrix. An additional advantage of FG is found when accomplishing re-analysis, since there is no need to recompute the whole stiffness matrix when the geometry changes -- This article presents CAD to FG conversion and the stiffness matrix computation based on non-continuous elements -- In addition inclusion/exclusion of O elements in the global stiffness matrix is studied -- Preliminary results shown that non-continuous NIO elements improve the accuracy of the results with considerable savings in time -- Numerical examples are presented to illustrate the possibilities of the methodspa
dc.formatapplication/pdfeng
dc.language.isoengspa
dc.publisherWorld Scientific Publishing Co.spa
dc.relation.ispartofInternational Journal of Computational Methods, Volume 2, Issue 4, pp. 569-586spa
dc.relation.isversionofhttp://dx.doi.org/10.1142/S0219876205000582spa
dc.rightsinfo:eu-repo/semantics/openAccesseng
dc.subjectTriangulación de Delaunayspa
dc.subject3D (Programas para computador)spa
dc.titleFixed grid finite element analysis for 3D structural problemsspa
dc.typearticleeng
dc.typeinfo:eu-repo/semantics/articleeng
dc.typeinfo:eu-repo/semantics/acceptedVersioneng
dc.rights.accessRightsopenAccesseng
dc.subject.lembTOPOLOGÍAspa
dc.subject.lembMÉTODO DE ELEMENTOS FINITOSspa
dc.subject.lembOPTIMIZACIÓN ESTRUCTURALspa
dc.subject.lembPROCESOS DE POISSONspa
dc.type.spaArtículospa
dc.subject.keywordTopologyspa
dc.subject.keywordFinite element methodspa
dc.subject.keywordStructural optimizationspa
dc.subject.keywordPoisson processesspa
dc.rights.accesoLibre accesospa
dc.date.accessioned2016-11-18T22:27:28Z
dc.type.hasVersionacceptedVersioneng
dc.tipo.versionObra publicadaspa
dc.citation.journalTitleInternational Journal of Computational Methodsspa
dc.citation.volume2spa
dc.citation.issue4spa
dc.citation.spage569spa
dc.citation.epage586spa
dc.identifier.doi10.1142/S0219876205000582spa


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record