1、汕頭大學(xué)碩士學(xué)位論文基于漸進結(jié)構(gòu)優(yōu)化法的結(jié)構(gòu)截面形狀優(yōu)化基于漸進結(jié)構(gòu)優(yōu)化法的結(jié)構(gòu)截面形狀優(yōu)化ShapeOptimizationDesignofStructuralElementSectionsBasedonEvolutionaryStructuralOptimization研究生：彭宇明專業(yè)：結(jié)構(gòu)工程研究方向：鋼結(jié)構(gòu)優(yōu)化設(shè)計及網(wǎng)絡(luò)協(xié)作設(shè)計導(dǎo)師：王湛教授2006年06月IIAbstractTheprevalenceofcomputerst

2、herapiddevelopmentofoptimizationalgithmshavefinatedinspiredgenerationsofstructualengineerstooptimizevariousstructurestheirmembersbycombiningcomputertechnologyadvancedoptimalmethods.Baseonsuchabackgroundtheauthputsfwardar

3、esearchprogramonshapeoptimizationdesignofstructuralelementsectionswhichisthoughttohaveabroadprospectinpratice.Thetraditionaloptimalmethodtheshapeoptimizationdesignofstructuralelementsectionsareintroducedtoreadersinthefir

4、stthreechapters.Astheshapeoptimizationdesignofstructuralelementsectionsbelongtostructuraloptimizationwhichhasitsowntraitssuchasdiscretenessnondifferentiablenonconvexitywhilethetraditionaloptimalmethodsarenotapplicable.No

5、ticingthatabranchofmodernoptimizationalgithmstheevolutionarystructuraloptimization(ESO)methodhasapeculiarabilityofbionicsimulationwithrelaxedoptimalconditionsbetteroptimizationresultswhichmakeitpossibletobeappliedtostruc

6、turaloptimization.Theanthintroducedthismethdfartheronthisresearchprogram.Sincetheprograms’compilationoffiniteelementtechnologyintheESOmethdisintricatetheresultsarelessreliabletheimplementationofESOisimprovedinthefirstpar

7、tfromthefourthchapterletANSYSbethesubstituteofmanualprogramwhichwouldsavestimeofcomputationincreasethereliabilityofoptimizationresults.AccdingtothetestresultsnestingtheprogramsofESOintotheANSYSwithAPDLlanguageissuccessfu

8、lthemethdhaswelladaptabilitystability.Inthesecondpartuserscanoptimizeallkindsofidiographicstructuralelementsections’shapeconvenientlybyusingthisestablishedoptimalprograms.ResultsofexamplesshowthatESOmethoditsimplementati

9、onbaseonANSYSarehighlyfeasibleeffectiveintheshapeoptimizationdesignofstructuralelementsections.thenbasedontheanalysisofshapeoptimalresultssizeoptimalofstructuralelementsectionsiscarriedintoexecutionvariablecrosssectionis

10、designedbyusingparameteroptimizationmoduleofANSYSwhichareabletoguideengineerstomakearationaldecisiononingstructuralelememtsectionsinrealdesignprojects.AtlastjoiningwiththeESOmethdthesteelbeamswithwebopeningsareoptimizedi

11、nitstopology.Duringtheoptimizationdesignsomeexperiencefromrealdesignprojectsisreferredtomaketheoptimalresultsmereasonablefeasible.KeyWds:optimizationdesignshapeofelementsectionsevolutionarystructuraloptimizationvariablec