Hybrid Element Method for Compsoite Structures Subjected to Boundary Layer Loading

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNX11CG66P
Agency Tracking Number: 105767
Amount: $98,183.00
Phase: Phase I
Program: SBIR
Awards Year: 2011
Solicitation Year: 2010
Solicitation Topic Code: A2.03
Solicitation Number: N/A
Small Business Information
3830 Packard, Suite 110, Ann Arbor, MI, 48108-2051
DUNS: 136770703
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: Y
Principal Investigator
 S. Raveendra
 Principal Investigator
 (734) 239-5757
Business Contact
 S. Raveendra
Title: Business Official
Phone: (734) 239-5757
Email: rraveendra@cometacoustics.com
Research Institution
In many situations, aerospace structures are subjected to a wide frequency spectrum of mechanical and/or acoustic excitations and therefore, there is a need for the development of numerical modeling techniques that are applicable for the resolution of dynamic response of complex systems spanning the entire frequency spectrum. Further, the modeling of composite structures becomes more and more important since many new vehicle designs incorporate increased amount of composite structural components due to weight specific advantages of composites. Thus, we propose to develop techniques that will allow the prediction of noise in the interior of an enclosure such as aircraft due to the transmission of turbulent boundary layer loading in the presence of composite structural components. This innovative Hybrid Element Method (HEM) solution tool for mid-frequency analysis, which utilizes elements of DEA, together with conventional low frequency FEM tools and high frequency EFEM tools, will provide a unified framework that is applicable for the solution of full frequency spectrum vibroacoustic prediction of nonuniform aerospace structures including metallic/composite configurations, accurately and efficiently.

* Information listed above is at the time of submission. *

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