logoxgvb
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 Posted: Sat 23:59, 07 May 2011 Post subject: Tory Burch UK Thick cross-sectional structure of t |
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Thick cross-sectional structure of the free vibration of conical shell
Edition,[link widoczny dla zalogowanych], Beijing, Tsinghua University Press , 1987 IrieT, YamadaG. AomuraS,[link widoczny dla zalogowanych], 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, andthefrequencyequationisestablished. Inordertoincreasetheaccura-cyandthesteadinessofthesolution. asub-structuremethodisproposedinwhichathicktruncatedconica1shetlisdividedintoanumberofsub-structuresandtheRiccatitransformisusedtotransrthestatepa-rametersthroughallsub-structures. Intheendofthepapertwoexamples. afreediskwithtwodifferentthicknesses,[link widoczny dla zalogowanych], andabevelgear, arepreselitedandtheresultsarecomparedwiththoseofexperiment,[link widoczny dla zalogowanych], thoseoffiniteelementmethodandthosereportedbyotherinvestigatorsutilizingdifferentanalyticalandnumericaltechniques. Theexamplesshowthattheaccuracyofthepresentmethodissatisfactoryandhasahighst ~ adiness. keywords: thickwallshell, freevibration, discretevariablemethod, substructuremethod, Riccatitrans-form
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