Shockresponsemodelingandcomputationofshipboardrotating

machinerysubjectedtobase-transferredshockforce

HE Shao-hua; WU Xin-yue

doi:10.11883/1001-1455(2011)06-0561-06

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HE Shao-hua, WU Xin-yue. Shockresponsemodelingandcomputationofshipboardrotatingmachinerysubjectedtobase-transferredshockforce[J]. Explosion And Shock Waves, 2011, 31(6): 561-566. doi: 10.11883/1001-1455(2011)06-0561-06

Citation:

HE Shao-hua, WU Xin-yue. Shockresponsemodelingandcomputationofshipboardrotating machinerysubjectedtobase-transferredshockforce[J]. Explosion And Shock Waves, 2011, 31(6): 561-566. doi: 10.11883/1001-1455(2011)06-0561-06

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Shockresponsemodelingandcomputationofshipboardrotating machinerysubjectedtobase-transferredshockforce

doi: 10.11883/1001-1455(2011)06-0561-06

HE Shao-hua^,,
WU Xin-yue

1.
Departmentof MechanicalEngineering,NavalUniversityofEngineering,

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Corresponding author: HE Shao-hua
Publish Date: 2011-11-25

Abstract

Abstract

Abstract:Arotor-bearingsystemunderbase-transferredshockexcitationwasestablishedbyapplying theGalerkinfiniteelementmodeltosimulatetheshipboardrotatingmachinerysubjectedtounderwaternon- contactexplosion.Basedonthe Newton'stheorem,moment-of-momentum theorem and Timoshenkobeamtheory,thedynamicdifferentialequationsofthissystemwerederivedbysyntheticallyconsideringtherotatinginertia, shearforce,gyroscopiceffect,axialforce,axialtorqueandoil filmforce.Thedynamicdifferentialequationsweresolvedbyusingthefinitedifferencemethodsin thetimedomainandthefiniteelementmethodinthespacedomain,respectively.Andthetime-varyingshockresponsesofthissystemwereobtained. Theaccuracyoftheproposedmodelwasverified. Finally,anapplicationexamplewasgiventoanalyzetheinfluencesofthegyroscopiceffectandsteady workloadingontheshockresponsesofthissystem.Investigatedresultsshowthattheaccuracyofthe proposedmodelingandcomputationmethodcanmeettheengineeringrequirementandthegyroscopic effecthasanobviousinfluenceontheshockresponses;andthattheworkloadingcantoneupthesystemresponse, buttheoverallresponsewiththesteadyworkloadingbeingconsideredisdistinctfrom thesumofthesteadyresponseandtheshockresponsewithoutthesteadyworkloadingbeingconsidered.
- solidmechanics,
- rotatingmachinery,
- modeling,
- shockresponseanalysis,
- shock