Dynamic stability of imperfect cable stayed masts

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dc.creatorGuzmán del Prado, Zenón José
dc.creatorCarvalho, Eulher Chaves
dc.creatorGonçalves, Paulo Batista
dc.date.accessioned2021-12-01T13:38:44Z
dc.date.available2021-12-01T13:38:44Z
dc.date.issued2010
dc.description.abstractCable stayed masts are used in several engineering applications. In this work, the nonlinear finite element method, using an updated Lagrangian formulation, is used to study the effect of initial geometric imperfections on the non-linear vibrations of cable stayed masts subjected to axial time dependent loads. The non-linear equations are solved using the Newton-Raphson method associated to an arc-length technique and the Newmark method is used to calculate the time responses of the system. Validation examples are presented and the influence of initial geometric imperfections and cable tensioning is studied when stayed towers are subjected to different types of axial loads. The Budianski´s criterion is used to study the loss of stability under sudden and harmonic loads. Obtained numerical results show the great influence of both cable tensioning and cable positioning on the nonlinear behavior of the system and could be used as a tool for an analysis of the nonlinear dynamics of the structure previous to design.pt_BR
dc.identifier.citationN. DEL PRADO, Zenon J. G.; CARVALHO, Eulher Chaves; GONÇALVES, Paulo B. Dynamic stability of imperfect cable stayed masts. Mecánica Computacional, Santa Fe, v. 24, n. 7, p. 647-658, 2010.pt_BR
dc.identifier.issn2591-3522
dc.identifier.urihttp://repositorio.bc.ufg.br/handle/ri/20072
dc.language.isoengpt_BR
dc.publisher.countryArgentinapt_BR
dc.publisher.departmentEscola de Engenharia Civil e Ambiental - EECA (RG)pt_BR
dc.rightsAcesso Abertopt_BR
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectCable-stayed structurespt_BR
dc.subjectDynamic instabilitypt_BR
dc.subjectNon-linear oscillationspt_BR
dc.subjectNon-linear finite elementpt_BR
dc.titleDynamic stability of imperfect cable stayed mastspt_BR
dc.typeArtigopt_BR

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