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Behavior of composite/metal aircraft structural elements and components under crash type loads - What are they telling us?Failure behavior results are presented from crash dynamics research using concepts of aircraft elements and substructure not necessarily designed or optimized for energy absorption or crash loading considerations. To achieve desired new designs which incorporate improved energy absorption capabilities often requires an understanding of how more conventional designs behave under crash loadings. Experimental and analytical data are presented which indicate some general trends in the failure behavior of a class of composite structures which include individual fuselage frames, skeleton subfloors with stringers and floor beams but without skin covering, and subfloors with skin added to the frame-stringer arrangement. Although the behavior is complex, a strong similarity in the static and dynamic failure behavior among these structures is illustrated through photographs of the experimental results and through analytical data of generic composite structural models. It is believed that the similarity in behavior is giving the designer and dynamists much information about what to expect in the crash behavior of these structures and can guide designs for improving the energy absorption and crash behavior of such structures.
Document ID
19910039802
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Carden, Huey D.
(NASA Langley Research Center Hampton, VA, United States)
Boitnott, Richard L.
(NASA Langley Research Center; U.S. Army, Aerostructures Directorate, Hampton VA, United States)
Fasanella, Edwin L.
(Lockheed Engineering and Sciences Co. Hampton, VA, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1990
Subject Category
Aircraft Design, Testing And Performance
Accession Number
91A24425
Distribution Limits
Public
Copyright
Other

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