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Aircraft subfloor response to crash loadingsResults are presented of an experimental and analytical study of the dynamic response to crash loadings of five different load-limiting subfloors for general aviation aircraft. These subfloors provide a high-strength structural floor platform to retain the seats and a crushable zone to absorb energy and limit vertical loads. Experimental static load-deflection data and dynamic deceleration response data for the five subfloors indicated that the high-strength floor platform performed well in that structural integrity and residual strength was maintained throughout the loading cycle. The data also indicated that some of the subfloor crush zones were more effective than others in providing nearly constant load for a range of displacement. The analytical data was generated by characterizing the nonlinear crush zones of the subfloor with static load-deflection data and using the DYCAST nonlinear finite element computer program. Comparisons between experimental and analytical data showed good correlation for the subfloors in which the static deformation mode closely approximated the dynamic deformation mode.
Document ID
19810058366
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Carden, H. D.
(NASA Langley Research Center Hampton, VA, United States)
Hayduk, R. J.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 11, 2013
Publication Date
April 1, 1981
Subject Category
Aircraft Design, Testing And Performance
Report/Patent Number
SAE PAPER 810614
Meeting Information
Meeting: Business Aircraft Meeting and Exposition
Location: Wichita, KS
Start Date: April 7, 1981
End Date: April 10, 1981
Sponsors: Society of Automotive Engineers
Accession Number
81A42770
Distribution Limits
Public
Copyright
Other

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