Affiliation:
1. University of Michigan
2. Northrop Grumman Newport News
Abstract
This paper presents a validation case study for an Energy Finite Element Analysis (EFEA) formulation through comparison to test data. The EFEA comprises a simulation tool for computing the structural response of a complex structure and the amount of the radiated power. When the forcing function originates from an external flow, then the EFEA can be used for computing the vibration and the noise created due to the external flow excitation. In the past the EFEA has been used for computing the flow induced vibration for a large scale vehicle. The EFEA formulation presented in this paper can account for periodic stiffeners, for partial fluid loading effects on the outer part of the structure, and for internal compartments filled with heavy fluid. The new developments are validated by computing the vibration induced on a 1/8 scale structure representative of an advanced hull concept, and by comparing the simulation results to the test data.
Reference20 articles.
1. Vlahopoulos
N.
, Garza-RiosL. O. and MolloC.
1999, “Numerical implementation, validation, and marine applications of an energy finite element formulation,” Journal of Ship Research43, 143–156.
2. Zhang
W.
, WangA., VlahopoulosN., WuK., 2003, “High frequency vibration analysis of thin elastic plates under heavy fluid loading by an energy finite element formulation“, Journal of Sound and Vibration263, 21–46.
3. Zhang
W.
, WangA., VlahopoulosN., 2002, “An alternative energy finite element formulation based on incoherent orthogonal waves and its validation for marine structures,” Finite Elements in Analysis and Design38, 1095–1113.
4. Zhang
W.
, VlahopoulosN. and WuK., 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.
5. Bernhard
R. J.
, HuffJ. E., 1999, “Structure-acoustic design at high frequency using the energy finite element method,” Journal of Vibration and Acoustics121, 295–301.
Cited by
2 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献
1. Substructuring Developments in the Energy Finite Element Formulation;Noise Control and Acoustics;2006-01-01
2. Energy Finite Element Method;Computational Acoustics of Noise Propagation in Fluids - Finite and Boundary Element Methods