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Wysłany: Sob 23:52, 07 Maj 2011 Temat postu: tory burch London Thick cross-sectional structure |
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Thick cross-sectional structure of the free vibration of conical shell
Edition, Beijing, Tsinghua University Press , 1987 IrieT, YamadaG. AomuraS, NaturalfrequenciesofMindlindrcularplates. AEJ. App1. hJJ. 1982l47 (3) l625-655FreeVibrationofThickTruncatedConicalShellCaiXianxl (NanhuaPowerplantResearchInstituteZhuzhou, 412002) AbstraetAtruncatedconicalshel1isanimportantstructura1componentinal1industria1applications. Analysisofthevibrationoftheshellisofgreatimportance. WhentheshellistOOthick,[link widoczny dla zalogowanych], theKirchlhherftheoryofthinshellsisnolongeravailable. Inthispaper, fromthetheoryofplatesandshellandtheMindlinas-sumption, asetoffirst-orderdifferentia1equationswithr ~ pecttothetenstateparametersofathicktrun-cotedconicalshellarederived. Thedifferentialequationsarethensolvedbyusingthediscrete-varlablemethod. inwhichtherelationshipofthestateparameteretweenthetwoboundarypointsisobtainedbysolvingtheinitialvalueproblem,[link widoczny dla zalogowanych], andthefrequencyequationisestablished. Inordertoincreasetheaccura-cyandthesteadinessofthesolution. asub-structuremethodisproposedinwhichathicktruncatedconica1shetlisdividedintoanumberofsub-structuresandtheRiccatitransformisusedtotransrthestatepa-rametersthroughallsub-structures. Intheendofthepapertwoexamples. afreediskwithtwodifferentthicknesses,[link widoczny dla zalogowanych], andabevelgear, arepreselitedandtheresultsarecomparedwiththoseofexperiment, thoseoffiniteelementmethodandthosereportedbyotherinvestigatorsutilizingdifferentanalyticalandnumericaltechniques. Theexamplesshowthattheaccuracyofthepresentmethodissatisfactoryandhasahighst ~ adiness. keywords: thickwallshell, freevibration, discretevariablemethod, substructuremethod,[link widoczny dla zalogowanych], Riccatitrans-form
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