Vibrational response of elastic membranes coupled to acoustic fluids using a BEM–BEM formulation
In the last two decades, few works have been reported in the literature related to analysis of fluid–structure interaction problems using Boundary Element Method for modeling both structure and fluid. To the author’s knowledge, none of them applied to the dynamic analysis of elastic membranes couple...
- Autores:
- Tipo de recurso:
- Fecha de publicación:
- 2014
- Institución:
- Universidad Tecnológica de Bolívar
- Repositorio:
- Repositorio Institucional UTB
- Idioma:
- eng
- OAI Identifier:
- oai:repositorio.utb.edu.co:20.500.12585/9040
- Acceso en línea:
- https://hdl.handle.net/20.500.12585/9040
- Palabra clave:
- Acoustic fluid
Boundary element method
Dual reciprocity boundary element method
Elastic membrane
Fluid–structure interaction
Membranes
Poisson equation
Sailing vessels
Structural dynamics
Fluids
Acceleration of the particles
Boundary element formulations
Dual reciprocity boundary element method
Elastic membranes
Fundamental solutions
Interaction problems
Three-dimensional Poisson equations
Vibrational response
Boundary element method
- Rights
- restrictedAccess
- License
- http://creativecommons.org/licenses/by-nc-nd/4.0/
| Summary: | In the last two decades, few works have been reported in the literature related to analysis of fluid–structure interaction problems using Boundary Element Method for modeling both structure and fluid. To the author’s knowledge, none of them applied to the dynamic analysis of elastic membranes coupled to acoustic fluids. In this work a full time-direct Boundary Element Formulation for the dynamic analysis of elastic membranes coupled to acoustics fluid is presented. The elastic membranes is modeled using the classical linear elastic pre-stretched membrane theory. The acoustic fluid is modeled using the acoustic-wave equation for homogeneous, isotropic, inviscid and irrotational fluids. Elastostatic fundamental solution is used in the boundary element formulation for the elastic membrane. The boundary element formulation for the acoustic fluid is based on the fundamental solution of three dimensional Poisson equation. Domain integrals related to inertial terms and those related with distributed pressure on membrane, were treated using the Dual Reciprocity Boundary ElementMethod. Fluid–structure coupling equations were established considering the continuity of the normal acceleration of the particles and dynamic pressure at fluid–structure interfaces. The time integration is carried out using the Houbolt method. Results obtained shows the accuracy and efficiency of the proposed boundary element formulation. © The Society for Experimental Mechanics, Inc. 2014. |
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