硝酸四合一機組底座的結構分析及優(yōu)化設計.pdf

1、西南交通大學碩士學位論文硝酸四合一機組底座的結構分析及優(yōu)化設計姓名：代晉申請學位級別：碩士專業(yè)：機械設計及理論指導教師：黃松和20100401西南交通大學碩士研究生學位論文第1I頁AbstractThenitricacid4in1unitisacombinationofthesteamturbine，nitricoxidecompressors，axialcompressorsandexpandingmachineAsthemainsu

2、pportstructureofthenitricacid4in1unitthebaseisrequiredwithbigstructuresize，andhighlysecurityperformanceWiththeUsingofthecomputeraidedengineeringanalysis(CAE)technologyinthestructuraldesignprocess，itCananalysethestaticstr

3、ength，stiffnessandvibrationofthebaseofthenitricacid4in1unitquicklyandaccurately，SOastofacilitatetheoptimizationofthestructuraldesignThepaperbythestudyofthenitricacid4in1unit’Sbase，州tlltheoryguidanceofthefiniteelementmeth

4、od，structuralmechanics，dynamicsandSOon，bymeansofANSYSsoftwarebuildsaparametricalfiniteelementmodelinaccordance、加也thestructuralcharacteristicsandtheactualworkingconditionsofthebaseThenthestaticanalysisanddynamicanalysisin

5、cludingmodalanalysisandharmonicresponseanalysis，arecarriedoutonthemodelrespectivelyThestaticstrengthandstiffnessvaluesareknownthroughthestaticanalysis，whilethenaturalfrequenciesandcorrespondingvibrationmodeareknownthroug

6、hthemodalanalysis，furthermore，theharmonicresponseanalysisiscontinuedonthisbaseThroughthisprocess，wecangetthedisplacementresponseofnodesunderdifferentfiequencydisturbancesEachanalysisresultisextractedinordertopr印arefordyn

7、amicoptimumdesignoptimumdesignofthenitricacid4in1unit’SbasebasedondynamiccharacteristicisaccomplishedbyfiniteelementanalysissoftwareANSYSWiththetotaldisplacementofsideplatenodesandhilghlowcoverplatenodesasdynamicoptimiza

8、tionobjectivesrespectivelythethicknessofthemainplateofthetopbeamasvariable，andthestaticstrengthasconstraintadynamicoptimizationmodelofthebaseissetupAfteroptimizationanalysis，optimumdesignprogramswhichhavedifferentoptimiz

9、ationobjectivesarecompared，inordertoputforwardadesignprogramofthenitricacid4in1unit’Sbase、析tlllighterweightandhighperformancestaticanddynamiccharacteristicsKeywords：Thenitricacid4in1unit，ANSYS，F(xiàn)initeelementmethod，Dynamic