Modeling and Approximation of a Coupled 3-D Structural Acoustics Problem
A growing area of research in the structural acoustics community concerns the problem of reducing structure-borne noise levels within an acoustic cavity. A specific example of this is motivated by the development of a new class of turboprob and turbofan engines which are very fuel efficient but also very noisy. The low frequency high amplitude acoustic fields produced by these engines cause vibrations in the fuselage which in turn generate unwanted interior noise. The passive control techniques which were initially considered were in general undesirable since the increased weight offset the advantages gained through the use of the new engines and lighter airframe materials. This then led to the study of active control techniques for this problem both in a frequency domain setting and from a time domain approach (PDE approach).
KeywordsTral Dinate Acoustics Cylin Lester
Unable to display preview. Download preview PDF.
- H.T. BANKS, K. ITO and C. WANG, “Exponentially Stable Approximations of Weakly Damped Wave Equations,” International Series in Numerical Mathematics, Birkhäuser, 100, 1991, pp. 1-33.Google Scholar
- H.T. BANKS, R.J. SILCOX and R.C. SMITH, “The Modeling and Control of Acoustic/Structure Interaction Problems Via Piezoceramic Actuators: 2-D Numerical Examples,” submitted to the ASME Journal of Vibration and Acoustics.Google Scholar
- H.T. BANKS, R.C. SMITH and Y. WANG, “Modeling Aspects for Piezoceramic Patch Activation of Shells, Plates and Beams,” Center for Research in Scientific Computation Technical Report, CRSC-TR92-12, North Carolina State University, November 1992.Google Scholar
- H.T. BANKS and R.C. SMITH, “The Modeling and Approximation of a Structural Acoustics Problem in a Hard-Walled Cylindrical Domain,” Center for Research in Scientific Computation Technical Report, work in progress.Google Scholar
- A.W. LEISSA, Vibration of Plates ,NASA SP-160, Washington, D.C., 1969.Google Scholar
- T.A. ZANG, C.L. STREETT and M.Y. HUSSAINI, “Spectral Methods for CFD,” ICASE Report 89-13, 1989.Google Scholar