艦船推進軸系抗沖擊分析研究.pdf

1、武漢理工大學碩士學位論文艦船推進軸系抗沖擊分析研究姓名：李增光申請學位級別：碩士專業(yè)：輪機工程指導教師：周瑞平20060301武漢理一l：人學碩士學位論文AbstractThewarShipincommissionand也eequipmentsonbOardareineVitabletoencountershockenviromentThenthehuUstmcture’sa11dtheequipments’abilitytosusta

2、intheshockload，inducedby也econtactornoncontactunderwaterexplosions，ispaidmostattentionbythedesignersandengineersThepropulsionshaftir培，includingthetransmissionshaftsa11dotheraccessoriesfromoutputendofenginetopropeller’isan

3、importantpanofthepowersystemUndertheshOck10ad，thedisplacementresponseandstressresponse，mainlyincludingtheshaftsectionandbearings，haveadirectconflection、ⅣithtllevitalityofpowersystemTherefore，thestudiesontheami—shockabili

4、tyofthepropulsionshaftingare如lIofpracticaImeaningfornaVyFirstlythetheoriesofallti—shockanalysisareinvestigateds”tematically，thent11ecalculationalmodelofpropulsionshaRingofwarshipforshockanalysisisestablishedandsomefactor

5、sofmodelbulidingarediscussedrespectiVelyBasedonthese，themodelbuildingmeⅡlodsofmtatingshaRinga11d也enonIineari毋problemarefutherstudiedSecondly，thetestingplatf0蛐toVeri巧themodel—buildingapproachisbuiltbyusingtlleLMSa11dtheca

6、JculationmodelisvcrifiedviamodaltestingFinally，onthebasisofthepreviouscalculationresultandanlysis，thepreliminaryimproVememschemeisproposedforapraticalex鋤pleThenttleoptimizationdesignisimpIementedbasedonthegeneticarithmet

7、ic(GA)111detail，themainresearchworkisasfbllows：(1)Theunderwaterexplosiontheory，mefluid—stnlctureinteractiontheoryofshipdyn鋤icresponsetoundenVaterexplosion，thenniteelementmodel—buildingtheoryofpropulsionshaftingforshockca

8、lculationandthecorrelativeshockresponsecomputationmetllodsareexpatiatedcomprehensiVelyEspescially，me“LargeMass”model，whichissuitableforsolVing也eresponsepmblemofshaRingwhentlleloadsatdiffbrembearingpositionaredifferent，is