PantheonO sistema DSpace de repositório digital captura, armazena, indexa, preserva e distribui material de pesquisa digital.http://pantheon.ufrj.br:802017-06-26T00:19:53Z2017-06-26T00:19:53ZMídia, arquivo e memória: o centro de documentação da TV GloboGranja, Mariana Gouveia de Carvalho Tobiashttp://hdl.handle.net/11422/22952017-06-25T03:00:12Z2009-12-02T00:00:00ZTítulo: Mídia, arquivo e memória: o centro de documentação da TV Globo
Autor(es)/Inventor(es): Granja, Mariana Gouveia de Carvalho Tobias
Orientador: Ribeiro, Ana Paula Goulart
Editor: Universidade Federal do Rio de Janeiro
Tipo: Trabalho de conclusão de graduação2009-12-02T00:00:00ZFusões e aquisições Cross-Border na indústria de óleo e gás: motivadores e tendênciasMiragaya, Flávia Cristina Sampaio da Costahttp://hdl.handle.net/11422/22942017-06-25T03:00:12Z2011-01-01T00:00:00ZTítulo: Fusões e aquisições Cross-Border na indústria de óleo e gás: motivadores e tendências
Autor(es)/Inventor(es): Miragaya, Flávia Cristina Sampaio da Costa
Orientador: Pinto Júnior, Helder Queiroz
Editor: Universidade Federal do Rio de Janeiro
Tipo: Trabalho de conclusão de graduação2011-01-01T00:00:00ZVibrações transversais de viga comprimida apoiada sobre sistema massa-molaCunha, Hélio Dias dahttp://hdl.handle.net/11422/22932017-06-25T03:00:12Z1969-01-01T00:00:00ZTítulo: Vibrações transversais de viga comprimida apoiada sobre sistema massa-mola
Autor(es)/Inventor(es): Cunha, Hélio Dias da
Orientador: Gomes, Paulo Alcântara
Resumo : The principal problem undertaken is this work is the determination of the natural frequencies of lateral
vibrations of a beam with axial load, wich carries a concentrated mass and spring located at any point along the length of the beam. The case of a beam with two concentrated masses and springs is also analysed. Exact soluctions for a beam with concentratedmass by classical methods was found by Karman (5) for a simply
supported beam with concentrated mass at its mid-point and by Prescott (6) for a cantilever beam with concentrated mass at its free end. The extension of the solutions to include the efect of a spring can be made by classical methods only for the special cases mentioned. Aproximate solutions for the lowest natural frequency of a beam, mass, and spring system may be obtained by the Rayleigh-Ritz (4,8) energy methods but it is not always possible to determine the degree of aproximation. The method adopted makes use of a series expansion in terms of the set of orthogonal functions associated with the normal modes of vibration of a beam. Such a method was used for the particular case of an axially unloaded cantilever beam with mass and spring by Young (1).
Editor: Universidade Federal do Rio de Janeiro
Tipo: Dissertação1969-01-01T00:00:00ZCálculo automático do efeito de vento em estruturas de edifícioSoriano, Humberto Limahttp://hdl.handle.net/11422/22922017-06-25T03:00:12Z1971-06-01T00:00:00ZTítulo: Cálculo automático do efeito de vento em estruturas de edifício
Autor(es)/Inventor(es): Soriano, Humberto Lima
Orientador: Carneiro, Fernando Luiz Lobo Barboza
Resumo : The scope of the present paper is the theoretical analysis of spacial frames under lateral loading (wind load) and the preparation of a computer program for evaluating the displacements and the intemal forces of the structural members. The structural model can be described as two groups of mutually orthogonal plane frames interacting with each other through the action of a horizontal rigid slab. At the intersection of these plane frames the interaction between bending and twisting moments are disregarded in this paper and transversal stiffness of the plane frames as well. The stiffness matrix of each plane frame is deduced. The stiffness matrices of the different plane frames are arranged conveniently and in such a way that the stiffness matrix of the spacial skeleton is of the banded type. The analysis is carried further by investigating the contribution of each plane frame to support the total lateral load. Next the plane frames are analysed separately. The matricial analysis scheme is used for the investigation of the redundant forces and the computer program is designe in order to optimize storage apace in the computer memory units. An IBM 1130 computer with 32k memory units was used. A comented flow chart for the afore rnentioned program is presented. Finally the theory is applied to some particular problems.
Editor: Universidade Federal do Rio de Janeiro
Tipo: Dissertação1971-06-01T00:00:00Z