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dc.contributor.authorCauteș, Gheorghe
dc.date.accessioned2017-10-12T10:30:04Z
dc.date.available2017-10-12T10:30:04Z
dc.date.issued2012
dc.identifier.issn1224-5615
dc.identifier.urihttp://10.11.10.50/xmlui/handle/123456789/4426
dc.descriptionThe Annals of ''Dunarea de Jos'' University of Galati : Fascicle XIV : MECHANICAL ENGINEERING, ISSN 1224 - 5615ro_RO
dc.description.abstractThe movements of many material systems can be described by differential equations that have coefficients that depend on time. It is difficult to determine the solutions of these equations. Although many concrete problems lead to non-linear differential equations where we can also find the term of variable damping, the classic equations that have been studied more were Hill or Mathieu, with periodic coefficient, that do not contain derivations of the first order. At this kind of equations, we reduce them to second order using substitutions as we will demonstrate. In this work, we show that we can obtain analytical exact solutions for non-linear homogeneous differential equations with a variable coefficient which describes the parametric free vibrations of mechanical systems.ro_RO
dc.language.isoenro_RO
dc.publisherUniversitatea "Dunărea de Jos" din Galațiro_RO
dc.subjectvibrationro_RO
dc.subjectmechanical systemro_RO
dc.subjectnon-linearro_RO
dc.titleThe Parametrical Free Vibrations of Elastic Systems, the Analytical Exact Solutionsro_RO
dc.typeArticlero_RO


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