A boundary element method formulation for modal analysis of doubly curved thick shallow shells
The study of vibrations of shells is an important aspect in the design of thin-walled structures. In general, analytical solutions for the natural frequencies of shells are not possible, and computational techniques are required. In this paper, modal analysis of shallow shells using a new boundary e...
- Autores:
- Tipo de recurso:
- Fecha de publicación:
- 2016
- Institución:
- Universidad Tecnológica de Bolívar
- Repositorio:
- Repositorio Institucional UTB
- Idioma:
- eng
- OAI Identifier:
- oai:repositorio.utb.edu.co:20.500.12585/8991
- Acceso en línea:
- https://hdl.handle.net/20.500.12585/8991
- Palabra clave:
- Boundary element method
Doubly curved shallow shells
Dual reciprocity boundary element method
Free vibration
Modal analysis
Thick shells
Elasticity
Modal analysis
Plates (structural components)
Sailing vessels
Shear deformation
Shear flow
Shells (structures)
Thin walled structures
Time domain analysis
Vibration analysis
Boundary element formulations
Computational technique
Dual reciprocity boundary element method
Free vibration
Fundamental solutions
Shallow shells
Shear deformable plate
Thick shells
Boundary element method
- Rights
- restrictedAccess
- License
- http://creativecommons.org/licenses/by-nc-nd/4.0/
Summary: | The study of vibrations of shells is an important aspect in the design of thin-walled structures. In general, analytical solutions for the natural frequencies of shells are not possible, and computational techniques are required. In this paper, modal analysis of shallow shells using a new boundary element method formulation is presented. The proposed formulation is based on a direct time-domain integration using the elastostatic fundamental solutions for both in-plane elasticity and shear-deformable plates. We modeled shallow shells by coupling the boundary element formulation of a shear-deformable plate and the two-dimensional plane stress elasticity. Effects of shear deformation and rotatory inertia were included in the formulation. Domain integrals related to inertial terms were treated by the dual reciprocity boundary element method. Numerical examples are presented to demonstrate the efficiency and accuracy of the proposed formulation. © 2015 Elsevier Inc. |
---|