Transient stability of empty and fluid-filled circular cylindrical shells

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dc.creatorSilva, Frederico Martins Alves da
dc.creatorGonçalves, Paulo Batista
dc.creatorGuzmán del Prado, Zenón José
dc.date.accessioned2021-12-01T13:27:55Z
dc.date.available2021-12-01T13:27:55Z
dc.date.issued2006-09
dc.description.abstractIn the present work a qualitatively accurate low dimensional model is used to study the non-linear dynamic behavior of shallow cylindrical shells under axial loading. The dynamic version of the Donnell non-linear shallow shell equations are discretized by the Galerkin method. The shell is considered to be initially at rest, in a position corresponding to a pre-buckling configuration. Then, a harmonic excitation is applied and conditions to escape from this configuration are sought. By defining steady state and transient stability boundaries, frequency regimes of instability may be identified such that they may be avoided in design. Initially a steady state analysis is performed; resonance response curves in the forcing plane are presented and the main instabilities are identified. Finally, the global transient response of the system is investigated in order to quantify the degree of safety of the shell in the presence of small perturbations. Since the initial conditions, or even the shell parameters, may vary widely, and indeed are often unknown, attention is given to all possible transient motions. As parameters are varied, transient basins of attraction can undergo quantitative and qualitative changes; hence a stability analysis which only considers the steady-state and neglects this global transient behavior, may be seriously non-conservative.pt_BR
dc.identifier.citationGONÇALVES, Paulo B.; SILVA, Frederico M. A. da; N. DEL PRADO, Zenon J. G. Transient stability of empty and fluid-filled circular cylindrical shells. Journal of the Brazilian Society of Mechanical Sciences and Engineering, Rio de Janeiro, v. 28, n. 3, p. 331-338, July/Sept. 2006.pt_BR
dc.identifier.doi10.1590/S1678-58782006000300011
dc.identifier.issne- 1806-3691
dc.identifier.issn1678-5878
dc.identifier.urihttp://repositorio.bc.ufg.br/handle/ri/20071
dc.language.isoengpt_BR
dc.publisher.countryBrasilpt_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.subjectCylindrical shellspt_BR
dc.subjectNonlinear vibrationspt_BR
dc.subjectFluid-structure interactionpt_BR
dc.subjectParametric instabilitypt_BR
dc.titleTransient stability of empty and fluid-filled circular cylindrical shellspt_BR
dc.typeArtigopt_BR

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