| Revista: | Journal of the Brazilian Society of Mechanical Sciences and Engineering |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000312179 |
| ISSN: | 1678-5878 |
| Autores: | Braun, A.L1 Awruch, A.M |
| Instituciones: | 1Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul. Brasil |
| Año: | 2003 |
| Periodo: | Oct-Dic |
| Volumen: | 25 |
| Número: | 4 |
| Paginación: | 352-363 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental |
| Resumen en inglés | A numerical model to study the aerodynamic and aeroelastic bridge deck behavior is presented in this paper. The flow around a rigid fixed bridge cross-section, as well as the flow around the same cross-section with torsional motion, are investigated to obtain the aerodynamic coefficients, the Strouhal number and to determine the critical wind speed originating dynamic instability due to flutter. The two-dimensional flow is analyzed employing the pseudo-compressibility approach, with an Arbitrary Lagrangean-Eulerian (ALE) formulation and an explicit two-step Taylor-Galerkin method. The finite element method (FEM) is used for spatial discretization. The structure is considered as a rigid body with elastic restrains for the cross-section rotation and displacement components. The fluid-structure interaction is accomplished applying the compatibility and equilibrium conditions at the fluid-solid interface. The structural dynamic analysis is performed using the classical Newmark's method |
| Disciplinas: | Ingeniería |
| Palabras clave: | Ingeniería civil, Ingeniería mecánica, Puentes, Viento, Aerodinámica, Aeroelasticidad, Interacción fluido-estructura, Método de elementos finitos, Simulación Large Eddy |
| Keyword: | Engineering, Civil engineering, Mechanical engineering, Bridges, Wind, Aerodynamics, Aeroelasticity, Fluid-structure interaction, Finite element method, Large Eddy simulation |
| Texto completo: | Texto completo (Ver HTML) |
