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Finite Element Models and Properties of a Stiffened Floor-Equipped Composite CylinderFinite element models were developed of a floor-equipped, frame and stringer stiffened composite cylinder including a coarse finite element model of the structural components, a coarse finite element model of the acoustic cavities above and below the beam-supported plywood floor, and two dense models consisting of only the structural components. The report summarizes the geometry, the element properties, the material and mechanical properties, the beam cross-section characteristics, the beam element representations and the boundary conditions of the composite cylinder models. The expressions used to calculate the group speeds for the cylinder components are presented.
Document ID
20100008495
Acquisition Source
Langley Research Center
Document Type
Technical Memorandum (TM)
Authors
Grosveld, Ferdinand W. (Lockheed Martin Corp. Hampton, VA, United States)
Schiller, Noah H. (NASA Langley Research Center Hampton, VA, United States)
Cabell, Randolph H. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 25, 2013
Publication Date
February 1, 2010
Subject Category
Acoustics
Report/Patent Number
LF99-10078
NASA/TM-2010-216192
L-19814
Funding Number(s)
WBS: WBS 877868.02.07.07.04.01
Distribution Limits
Public
Copyright
Public Use Permitted.

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