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Influence of gravity forces in the response of framed structures to earthquake excitations
Abstract This paper presents an algorithm which accounts for the instability effects of gravity forces in the dynamic analyses of plane frameworks with uniform members subject to earthquake excitations. A nonlinear static analysis, the formulation of a stress dependent stiffness matrix and the solution of a nonlinear eigenvalue problem are the basic steps of the algorithm. Numerical results are provided to show the effects of gravity forces on the frequencies and modes of vibrations of tall frameworks and on their response to earthquake excitations. These results are compared with those available elsewhere and some extensions and applications are given.
Influence of gravity forces in the response of framed structures to earthquake excitations
Abstract This paper presents an algorithm which accounts for the instability effects of gravity forces in the dynamic analyses of plane frameworks with uniform members subject to earthquake excitations. A nonlinear static analysis, the formulation of a stress dependent stiffness matrix and the solution of a nonlinear eigenvalue problem are the basic steps of the algorithm. Numerical results are provided to show the effects of gravity forces on the frequencies and modes of vibrations of tall frameworks and on their response to earthquake excitations. These results are compared with those available elsewhere and some extensions and applications are given.
Influence of gravity forces in the response of framed structures to earthquake excitations
Oliveto, G. (author)
Engineering Structures ; 6 ; 104-112
1984-01-01
9 pages
Article (Journal)
Electronic Resource
English
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