华东理工---船体模态分析方法研究

2003MSC.Software-1-2003MSC.SoftwareTheresearchofhullmodeanalysisAbstract:Amethodofanalyzinghullmodebyhybridizablefiniteelementmodelhasbeendiscussedinthispaper,thehybridizablefiniteelementmodelofashiphasbeenestablishedanditsinherentfrequenciesofoverallvibrationhasbeencomputedparticularly.Thecomputingresultsshowsthattheresultofoverallvibrationcomputedbyhybridizablefiniteelementmodelisappreciablylessthanthatbymatrixtransfermethod.KeyWords:hybridizablefiniteelementmodeloverallvibrationmodeanalysis,MSC.Nastran{F(t)}[K]{y}}y[C]{}y[M]{...=++-2-2003MSC.Software[M][C][]{{{y}{F(t)}()[C]{F(t)}[K][M]}..y}y.0[K]{y}}y[M]{..=+[K][M]12FMLewisFHToddmaV=21CvKib2(kg/m)maH=21CHKid2(kg/m)bdCvCHKii-3-2003MSC.Software11MSC.Nastran2523-4-2003MSC.Software45.NASTRANNASTRAN1.1281.0638-5.7%(:HZ)2.4682.3247-5.8%1.9381.8947-2.2%(:HZ)4.1884.0952-2.2%SWATH[1]M.[M]..1993[2],.[M].:.2000[3]MSC.PATRAN[4],.[M].:.1992-5-