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Progressive Failure Studies of Stiffened Panels Subjected to Shear LoadingExperimental and analytical results are presented for progressive failure of stiffened composite panels with and without a notch and subjected to in plane shear loading well into their postbuckling regime. Initial geometric imperfections are included in the finite element models. Ply damage modes such as matrix cracking, fiber-matrix shear, and fiber failure are modeled by degrading the material properties. Experimental results from the test include strain field data from video image correlation in three dimensions in addition to other strain and displacement measurements. Results from nonlinear finite element analyses are compared with experimental data. Good agreement between experimental data and numerical results are observed for the stitched stiffened composite panels studied.
Document ID
20020080783
Acquisition Source
Langley Research Center
Document Type
Contractor Report (CR)
Authors
Ambur, Damodar R. (NASA Langley Research Center Hampton, VA United States)
Jaunky, Navin (Institute for Computer Applications in Science and Engineering Hampton, VA United States)
Hilburger, Mark W. (NASA Langley Research Center Hampton, VA United States)
Bushnell, Dennis M.
Date Acquired
September 7, 2013
Publication Date
August 1, 2002
Subject Category
Fluid Mechanics And Thermodynamics
Report/Patent Number
ICASE-2002-24
NAS 1.26:211757
NASA/CR-2002-211757
Funding Number(s)
CONTRACT_GRANT: NAS1-97046
PROJECT: RTOP 505-90-52-01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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