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《基于變密度法的柔性機(jī)構(gòu)拓?fù)鋬?yōu)化設(shè)計(jì)與其后處理方法分析》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、華中科技大學(xué)碩士學(xué)位論文AbstractCompliantmechanismshaveincomparableadvantagesovertherigidmechanismsinsomeway,suchasindependenceoftransmissionvice,theminiaturizationofstructuresandsoon,whichresultfromitscharacteristicsoftransmissiondrivenbyelasticdeformation.Theyarewidelyusedinabroadrangeofhigh-techfieldsvaryin
2、gfromaerospacetomicro-electromechanicalsystems.Theapplicationoftopologyoptimizationmakesthedesignofcompliantmechanismfreefromthetraditionalpatternofoverdependenceonartificialexperience,andbecomesystematicallyandscientifically.Therefore,itisofprodigiousapplicationvalueandresearchsignificance.However
3、,topologyoptimizationofcompliantmechanismiseasilyoccurtheone-nodeconnectedhingesproblem,causestressconcentrationandleadtofracturefailure;ontheotherhand,thecompliantmechanismsoptimizedbyexistingtopologyoptimizationtechnologyareoftennotconformtopracticalprojects,difficultinmodelextractingandmanufactu
4、ring.Howtoefficientlydecreasetheone-nodeconnectedhinges,shortenthedeviationbetweentopologicaldesignandengineeringpracticeaswellasstrengthenthemanufacturingperformanceofthetopologystructureisessentialtorealizetopologyoptimizationmethodsformanufacturing.Thispaperanalyzesoverseasanddomesticresearchsta
5、tusoftopologyoptimizationusedincompliantmechanism,focusontheone-nodeconnectedhingesproblemandpost-processingproblem,themainworkincludesthefollowingaspects:Firstly,thisthesisdeeplyinvestigatestheresearchstatusoftopologyoptimizationusedincompliantmechanism,discussesthesolvingprocedureofSolidIsotropic
6、MicrostructureswithPenalizationMethod(SIMP)andParameterizationLevelSetMethod(PLSM),aswellascomparestheadvantagesanddisadvantagesofSIMPandPLSM.Secondly,onthebasisofpreviousstudies,thispaperproposesthemathematicalmodelofthecompliantmechanismmulti-objectivetopologyoptimizationproblem,andcombinesdensit
7、yfilteringapproachwithsensitivityfilteringtechnologytoreducetheone-nodeconnectedhingesproblem.Itmakestheresultsmeettherequirementofthestructurebearingcapacity,aswellasimprovetheoutputcharacteristics.Theeffe
