Engineering design using evolutionary structural optimisation based on iso-stress-driven smooth geometry removal

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dc.contributor.authorGarcía, M.J.
dc.contributor.authorRuíz, O.E.
dc.contributor.authorSteven, G.P.
dc.contributor.departmentUniversidad EAFIT. Departamento de Ingeniería Mecánicaspa
dc.contributor.researchgroupLaboratorio CAD/CAM/CAEspa
dc.date.accessioned2016-11-30T15:24:34Z
dc.date.available2016-11-30T15:24:34Z
dc.date.issued2001
dc.description.abstractThe main goal of Evolutionary Structural Optimisation (ESO) research has been to provide an easily applicable optimisation method for the engineering industry which assists the design process for product improvement -- Originally O was based on the concept of fully stressed structures and it is obtained by slowly removing, from a Finite Element mesh these elements that present the lowest stress value -- Following this heuristically-driven removal criteria, the initial topology evolves towards the optimum one -- Since its introduction in 1992, ESO has been developed and extended to several types of structural problems -- Initial weaknesses of ESO were (i) typically long solution times and (ii) topologies with jagged surfaces as a result of removing whole elements in the optimisation process -- These characteristics hindered its application to computer aided design and analysis -- In this investigation, these weaknesses have been addressed for 2D situations by (i) basing the stress computation on the Fixed Grid (FG) finite element method and (ii) removing material with the lowest values along iso-stress contours instead of removing whole elements -- A boundary representation (B-rep) of the structure is maintained at each iteration of the optimisation process -- Modification to the workpiece is made by identifying the stress contour lines and incorporating them into the evolving geometry -- The topological consistency of the B-rep is maintained via normalized 2D boolean operationseng
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dc.identifier.citation@inproceedings{2001_Garcia_Engineering, title={Engineering Design Using Evolutionary Structural Optimization Based on Iso-Stress-Driven Smooth Geometry Removal}, author={Garcia, M. and Ruiz, O. and Stephen, G.}, booktitle={NAFEMS (Intl Assoc. Eng. Analysis Community) World Congress 2001}, volume={1,2}, isbn={9781874376309}, publisher={NAFEMS}, address={Italy}, year={2001}, }spa
dc.identifier.isbn978-187-437-630-9
dc.identifier.urihttp://hdl.handle.net/10784/9787
dc.language.isoengspa
dc.relation.ispartofProceedings of the NAFEMS World Congress : Lake Como, 2001spa
dc.rights.accessrightsinfo:eu-repo/semantics/closedAccesseng
dc.rights.localAcceso cerradospa
dc.subject.keywordStructural optimizationeng
dc.subject.keywordFinite element methodeng
dc.subject.keywordIterative methods (mathematics)eng
dc.subject.keywordFEA (Finite Element Analysis)spa
dc.subject.lembOPTIMIZACIÓN ESTRUCTURALspa
dc.subject.lembMÉTODO DE ELEMENTOS FINITOSspa
dc.subject.lembMÉTODOS ITERATIVOS (MATEMÁTICAS)spa
dc.subject.lembCOLECTORES (INGENIERÍA)spa
dc.subject.lembDISEÑO DE PRODUCTOSspa
dc.titleEngineering design using evolutionary structural optimisation based on iso-stress-driven smooth geometry removaleng
dc.typeinfo:eu-repo/semantics/conferencePapereng
dc.typeconferencePapereng
dc.typeinfo:eu-repo/semantics/publishedVersioneng
dc.typepublishedVersioneng
dc.type.localDocumento de conferenciaspa

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