This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Combining an Energy Boundary Element with an Energy Finite Element Analysis for Airborne Noise Simulations
Technical Paper
2007-01-2178
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The Energy Boundary Element Analysis (EBEA) has been utilized in the past for computing the exterior acoustic field at high frequencies (above ∼400Hz) around vehicle structures and numerical results have been compared successfully to test data [1, 2 and 3]. The Energy Finite Element Analysis (EFEA) has been developed for computing the structural vibration of complex structures at high frequencies and validations have been presented in previous publications [4, 5]. In this paper the EBEA is utilized for computing the acoustic field around a vehicle structure due to external acoustic noise sources. The computed exterior acoustic field comprises the excitation for the EFEA analysis. Appropriate loading functions have been developed for representing the exterior acoustic loading in the EFEA simulations, and a formulation has been developed for considering the acoustic treatment applied on the interior side of structural panels. In order to demonstrate how the new developments can be combined in airborne noise applications, a case study is presented.
Recommended Content
Authors
Citation
Vlahopoulos, N., Zhang, G., and He, J., "Combining an Energy Boundary Element with an Energy Finite Element Analysis for Airborne Noise Simulations," SAE Technical Paper 2007-01-2178, 2007, https://doi.org/10.4271/2007-01-2178.Also In
References
- Wang A. Vlahopoulos N. Wu K. 2004 “Development of an energy boundary element formulation for computation of sound radiation at high frequency,” Journal of Sound and Vibration 278 413 436
- Wang A. Vlahopoulos N. Wu K. “An Energy Boundary Element Formulation for Sound Radiation at High Frequencies Internoise 2002 Dearborn, MI
- Vlahopoulos N. DeLanghe K. Sun J. “Energy based Boundary Element Method for Computing the Exterior Acoustic Field for Vehicle Airborne Noise Anlaysis,” FISITA 2006, paper No. F2006D193
- Wang A. Vlahopoulos N. Buehrle R. D. Klos J. 2005 “Energy Finite Element Analysis of the NASA Aluminum Testbed Cylinder,” SAE Paper 2005-01-2372 , 2005 SAE Noise and Vibration Conference Traverse City, Michigan
- Vlahopoulos N. Wang A. Wu K. “An EFEA formulation for computing the structural response of complex structures,” Proceedings of IMECE 05, 2005 ASME IMECE November 5 11 2005 Orlando FL
- Zhang W. Wang A. Vlahopoulos N. Wu K. 2003 “High frequency vibration analysis of thin elastic plates under heavy fluid loading by an energy finite element formulation” Journal of Sound and Vibration 263 21 46
- Zhang W. Vlahopoulos N. Wu K. 2005 “An energy finite element formulation for high frequency vibration analysis of externally fluid-loaded cylindrical shells with periodic circumferential stiffeners subjected to axi-symmetric excitation” Journal of Sound and Vibration 282 679 700
- Zhang W. Wang A. Vlahopoulos N. 2002 “An alternative energy finite element formulation based on incoherent orthogonal waves and its validation for marine structures” Finite Elements in Analysis and Design 38 1095 1113
- Zhang W. Vlahopoulos N. Wu K. Wang A. 2005 “High Frequency Vibration Analysis of Stiffened Plates under Heavy Fluid Loading by an Energy Finite Element Analysis Formulation,” Finite Elements in Analysis and Design 41 11-12 1056 1078