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Continuous and Finite Element Methods for the Vibrations of Inflatable Beams
Inflatable structures are under increasing development in various domains. Their study is often carried out by using 3D membrane finite elements and for static loads. There is a lack of knowledge in dynamic conditions, especially for simple and accurate solutions for inflatable beams. This paper deals with the research on the natural frequencies of inflatable Timoshenko beams by an exact method: The continuous element method (CEM), and by the classical finite element method (FEM). The dynamic stiffness matrix D(ω) is here established for an inflatable beam; it depends on the natural frequency and also on the inflation pressure. The stiffness and mass matrixes used in the FEM are deduced from D(ω). Natural frequencies and natural modes of a simply supported beam are computed, and the accuracy of the CEM is checked by comparisons with the finite element method and also with experimental results.
Continuous and Finite Element Methods for the Vibrations of Inflatable Beams
Inflatable structures are under increasing development in various domains. Their study is often carried out by using 3D membrane finite elements and for static loads. There is a lack of knowledge in dynamic conditions, especially for simple and accurate solutions for inflatable beams. This paper deals with the research on the natural frequencies of inflatable Timoshenko beams by an exact method: The continuous element method (CEM), and by the classical finite element method (FEM). The dynamic stiffness matrix D(ω) is here established for an inflatable beam; it depends on the natural frequency and also on the inflation pressure. The stiffness and mass matrixes used in the FEM are deduced from D(ω). Natural frequencies and natural modes of a simply supported beam are computed, and the accuracy of the CEM is checked by comparisons with the finite element method and also with experimental results.
Continuous and Finite Element Methods for the Vibrations of Inflatable Beams
Thomas, J.C. (Autor:in) / Jiang, Z. (Autor:in) / Wielgosz, C. (Autor:in)
International Journal of Space Structures ; 21 ; 197-221
01.12.2006
25 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Continuous and Finite Element Methods for the Vibrations of Inflatable Beams
| Online Contents | 2006
Finite element formulation for inflatable beams
| Elsevier | 2007
Finite element formulation for inflatable beams
| Online Contents | 2007
Erratum to “Finite element formulation for inflatable beams”
| Online Contents | 2007
Erratum to “Finite element formulation for inflatable beams”
| Elsevier | 2007