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 Wysłany: Nie 4:24, 08 Maj 2011 Temat postu: oakley norge Multiple degrees of freedom forced vi |
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,ed hardy danmark
Multiple degrees of freedom forced vibration of asymmetric piecewise linear systems of Fourier Series Method
Activity Group ed. Mechanical vibration on the books. Beijing : China Machine Press . 198,oakley norge,012 Taniguchi repair. Vibration mechanics ,, y, y evening . Tokyo: Yang Yin- Tang release. 1976: Chapter 9 , 414FourierSeriesSolutionofForcedVibrationofaMulti ·-Degree ·-of ·-FreedomSystemwithPiecewise-LinearElasticElementsJinJdno (DepartmentofEngineeringMechanics. ShenyangInstituteofAeronauticalEngineeringShenyang, 110034) GuanLizhang (DepartmentofMechanics. CollegeofScience, NorteasternUniversityShenyang, 110006) AbstractInthispaper. theforcedvibrationsinanunsymmetricalpiecewise-linearsystemwithmulti-degree-of-freedomareanalyzedbymeansofamethodutilizingappropriateFourierseriesexpansion. Themainfeaturesofthemethodareasfollows: (1) ExpandingthenonlinearpartoftherestoringforcesintoaFourierserieswiththesameperiodasthegivenexcitationforces. andthen, thenonlinearpartisregardedasanexcitationforceapplied. (2) Obtainingtheformalsolutionbysolvingthelinearizedequation. (3) DeterminingtheunknowncoefficientsoftheFourierexpansionundertheconditionthattheformalsolutionobtainedaboveshouldsatisfythegivenconditionsofthepiecewise-linearcharacteristicsofthesystem. Todeterminethestabilityoftheperiodicsolutionobtained,ed hardy bikinit, aperiodregionisdividedintoseveralsubregions,mulberry taske, ineachofwhichtheequationofmotionofthesystemislinear. usingthe2Nphaseanglesobtainedintheprocedureofdeterminingtheperiodicsolution. Thismakesthetaskofestablishingthemonodromymatrixverysimple,mulberry outlet, whichcorrespondstotheperiodicmotion. Keywords: nonlinearvibration; piecewise-linearsystem; forcedvibration; Fourierseriessolution; stabilityofperiodicsolution the first gold -based duo of men . Professor of Health in February 1946 . Phone : (024) 86120536; E-mail: jinjd @ 163. com
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