鞍形艙壁結(jié)構(gòu)強度與穩(wěn)定性初步研究.pdf

1、華中科技大學(xué)碩士學(xué)位論文鞍形艙壁結(jié)構(gòu)強度與穩(wěn)定性初步研究姓名：許汀申請學(xué)位級別：碩士專業(yè)：船舶與海洋結(jié)構(gòu)物設(shè)計制造指導(dǎo)教師：程遠勝20070601華中科技大學(xué)碩士學(xué)位論文IIAbstractSternpressurebulkheadisasignificantcomponentofasubmarine.Planebulkheadsphericalbulkheadareusuallyusedinsubmarineinservice.But

2、inpracticethesetwofmsofbulkheadhavesomeshtcomings.Withthedevelopmentofsubmarinetomedeepseahighspeedtheenhancementofsubmarinesattackcapabilitytherequirementfthecarryingcapacityofthepressurebulkheadisraised.Thusthedesignof

3、newstylestructureofpressurebulkheadwhichhasbetterstrengthstabilityultimatecarryingcapabilityagainstimpactlowersensitivitytodeflectionisveryimptanttothesafetyreliabilityofsubmarinestructures.Recentlyproposedsaddleshapedbu

4、lkheadisanewkindofpressurebulkheadwhichconsistsofsphericalshellreversedsphericalshellastrengthframebetweenthetwopartsofshellstoimproveitsstability.Researchonthistypestructureisratherlimited.Howevertheunderstingofthestren

5、gthstabilityacteristicsofthenewstylebulkheadisveryimptantfthedesignofsubmarinepressurebulkheadstherefethestrengthstabilityofthesaddleshapedbulkheadisstudiedinthethesis.Inthisthesisfiniteelementsoftwareisemployedtoanalyze

6、theacteristicsofthesaddleshapedbulkheadsstrengthstability.Aftertheconnectionpositionchamferanglebetweentheshellthestrengthframearechosentheinfluenceofthemajstructuralparametersincludingthethicknessoftheshells、theradiusof

7、thereversedsphericalshell、theheightfromtheframetothebottomofthebulkhead、thesectionalparametersofthestrengthframeonthestrengthofthesaddleshapedbulkheadisdiscussedindetail.Thestressconcentrationattheconnectionbetweentheshe