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Low and High Frequency Models of Response Statistics of a Cylindrical Orthogrid Vehicle Panel to Acoustic ExcitationThis presentation further develops the orthogrid vehicle panel work. Employed Hybrid Module capabilities to assess both low/mid frequency and high frequency models in the VA One simulation environment. The response estimates from three modeling approaches are compared to ground test measurements. Detailed Finite Element Model of the Test Article -Expect to capture both the global panel modes and the local pocket mode response, but at a considerable analysis expense (time & resources). A Composite Layered Construction equivalent global stiffness approximation using SEA -Expect to capture response of the global panel modes only. An SEA approximation using the Periodic Subsystem Formulation. A finite element model of a single periodic cell is used to derive the vibroacoustic properties of the entire periodic structure (modal density, radiation efficiency, etc. Expect to capture response at various locations on the panel (on the skin and on the ribs) with less analysis expense
Document ID
20100025995
Document Type
Presentation
Authors
Smith, Andrew
(NASA Marshall Space Flight Center Huntsville, AL, United States)
LaVerde, Bruce
(Engineering Research and Consulting, Inc. Huntsville, AL, United States)
Teague, David
(Jacobs Engineering Group, Inc. Huntsville, AL, United States)
Gardner, Bryce
(ESI Group United States)
Cotoni, Vincent
(ESI Group United States)
Date Acquired
August 24, 2013
Publication Date
June 1, 2010
Subject Category
Numerical Analysis
Report/Patent Number
M10-0695
Meeting Information
Meeting: The Spacecraft and Launch Vehicle Dynamic Environments Workshop/The Aerospace Corporation and Jet Propulstion Lab.
Location: El Segundo, CA
Country: United States
Start Date: June 8, 2010
End Date: June 10, 2010
Sponsors: Jet Propulsion Lab., California Inst. of Tech., Aerospace Corp.
Funding Number(s)
CONTRACT_GRANT: NAS8-36200
Distribution Limits
Public
Copyright
Public Use Permitted.
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