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Volume 31 Issue 6
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Article Navigation >  Explosion And Shock Waves  > 2011  >  31(6): 561-566
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
shu

Shockresponsemodelingandcomputationofshipboardrotating machinerysubjectedtobase-transferredshockforce

doi: 10.11883/1001-1455(2011)06-0561-06
  • 1.

    Departmentof MechanicalEngineering,NavalUniversityofEngineering,

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