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Numerical simulation of a composite helicopter sub-floor structure subjected to water impact

Kohlgrüber, D. and Vigliotti, A. and Weißberg, V. and Bartosch, H. (2004) Numerical simulation of a composite helicopter sub-floor structure subjected to water impact. AHS 60th Annual Forum, Baltimore, Maryland, USA, 7.-10.06.2004.

Full text not available from this repository.

Abstract

This paper describes recent research activities on the design, numerical simulation and testing of a composite helicopter sub-floor structure with a novel approach to avoid skin breakage in the case of a crash on water. After the analysis of the structural behavior of current sub-floor designs in the case of water crash events IAI and ECD worked on a new design which was supported by numerical simulation work performed by DLR using the explicit FE-codes PAMCRASH. Finally a demonstrator sub-floor box was built to prove the concept in a component test that was performed at CIRA. In this paper the entire study is presented with a focus on the numerical crash simulations and the comparison with the corresponding test results from a purely vertical drop test on water. Finally, the validated simulation approach is used in a sensitivity study to investigate the behavior of the new sub-floor design in load cases with initial pitch and roll angles that could not be tested.

Document Type:Conference or Workshop Item (Speech)
Additional Information: LIDO-Berichtsjahr=2005,
Title:Numerical simulation of a composite helicopter sub-floor structure subjected to water impact
Authors:
AuthorsInstitution or Email of Authors
Kohlgrüber, D.UNSPECIFIED
Vigliotti, A.CIRA
Weißberg, V.Israel Aircraft Industries
Bartosch, H.Eurocopter Deutschland
Date:2004
Status:Published
Keywords:simulation, modelling, crash, water impact, ditching
Event Title:AHS 60th Annual Forum, Baltimore, Maryland, USA, 7.-10.06.2004
Organizer:The American Helicopter Society
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):UNSPECIFIED
Location: Stuttgart
Institutes and Institutions:Institute of Structures and Design
Deposited By: elib DLR-Beauftragter
Deposited On:16 Sep 2005
Last Modified:14 Jan 2010 13:26

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