Integrated analysis and design in stochastic optimization

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dc.contributor.authorMaglaras, George K.en
dc.contributor.committeechairNikolaidis, Efstratiosen
dc.contributor.committeememberHaftka, Raphael T.en
dc.contributor.committeememberHughes, Owen F.en
dc.contributor.departmentAerospace and Ocean Engineeringen
dc.date.accessioned2014-03-14T21:50:48Zen
dc.date.adate2012-11-29en
dc.date.available2014-03-14T21:50:48Zen
dc.date.issued1989-08-15en
dc.date.rdate2012-11-29en
dc.date.sdate2012-11-29en
dc.description.abstractWhen structural optimization is performed via an iterative solution technique, it is possible to integrate the analysis and design iterations, in an integrated analysis and design procedure. The present work seeks to apply an integrated analysis and design approach in reliability based optimization, when a safety index approach is used. Two variants of the new approach are presented. Both of them are based on partially converged solution of the optimization procedure. The safety index approach employed allows us to use semi-analytical formulas to calculate the sensitivity derivatives of the safety constraints. The new approach is applied to the design of a simple structure. Both methods are robust to a satisfactory degree. The results are compared to those obtained by the safety index approach without integrating the analysis and design processes. The new methods substantially reduce the computational cost of optimization, which indicates that integrated analysis and design has the potential of removing a major obstacle, which is the excessive computational cost, in applying stochastic optimization to real life structural design.en
dc.description.degreeMaster of Scienceen
dc.format.extentix, 98 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-11292012-040112en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-11292012-040112/en
dc.identifier.urihttp://hdl.handle.net/10919/46048en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1989.M346.pdfen
dc.relation.isformatofOCLC# 20766060en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1989.M346en
dc.subject.lcshStochastic analysisen
dc.subject.lcshStochastic processesen
dc.titleIntegrated analysis and design in stochastic optimizationen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineAerospace and Ocean Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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