Aircraft Subfloor Response to Crash Loadings

810614

02/01/1981

Event
Business Aircraft Meeting and Exposition
Authors Abstract
Content
Results 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 crush-able 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.
Meta TagsDetails
DOI
https://doi.org/10.4271/810614
Pages
24
Citation
Carden, H., and Hayduk, R., "Aircraft Subfloor Response to Crash Loadings," SAE Technical Paper 810614, 1981, https://doi.org/10.4271/810614.
Additional Details
Publisher
Published
Feb 1, 1981
Product Code
810614
Content Type
Technical Paper
Language
English