Crashworthiness analysis of aircraft fuselage with sine-wave beam structure

An integrated design concept for crashworthy fuselage using sine-wave beam and strut is proposed and investigated. The finite element model of aircraft fuselage is built first. The structures above cabin floor, occupant and seat are simplified as two rigid blocks. The fuselage frame is redesigned, and the sine-wave beam is arranged under the frame. The impact dynamic performance of the aircraft with bottom sine-wave beam structure is studied and compared with that of conventional type. To obtain better crashworthiness performance, different rigidity of strut is combined with the sine-wave beam bottom structure. Numerical simulation result shows that the proposed sine-wave beam bottom structure could not only dissipate more proportion of impact kinetic energy but also reduce the initial peak acceleration. The structure and rigidity of strut have great influence on the crashworthiness performance. To give a better fuselage structure, both of the strut and bottom structure should be properly integrated and designed.

[1]  Jinwu Xiang,et al.  The crashworthiness of civil aircraft using different quadrangular tubes as cabin-floor struts , 2011 .

[2]  Tianchun Zou,et al.  Research on Effects of Oblique Struts on Crashworthiness of Composite Fuselage Sections , 2012 .

[3]  Martin Hepperle,et al.  Crashworthiness and ditching behaviour of blended-wing-body (BWB) aircraft design , 2015 .

[4]  Hamid M. Lankarani,et al.  Scale modelling of aircraft fuselage: an innovative approach to evaluate and improve crashworthiness , 2010 .

[5]  Mostafa Rassaian,et al.  LS-DYNA MAT54 modeling of the axial crushing of a composite tape sinusoidal specimen , 2011 .

[6]  Peter Middendorf,et al.  Integration of a Composite Crash Absorber in Aircraft Fuselage Vertical Struts , 2011 .

[7]  Yiru Ren,et al.  Energy absorption structures design of civil aircraft to improve crashworthiness , 2014, The Aeronautical Journal (1968).

[8]  Guo Jun,et al.  Drop test and crash simulation of a civil airplane fuselage section , 2015 .

[9]  Hamid M. Lankarani,et al.  A modern aerospace modeling approach for evaluation of aircraft fuselage crashworthiness , 2003 .

[10]  Jinwu Xiang,et al.  A comparative study of the crashworthiness of civil aircraft with different strut configurations , 2010 .

[11]  Mu Rangke.  Correlation Study of Crash Analysis and Test of Civil Airplane Sub-cabin Energy Absorption Structure , 2012 .

[12]  F. Chaudoye,et al.  Materials characterisation and crash modelling of composite-aluminium honeycomb sandwich material , 2009 .

[13]  Sotiris Kellas,et al.  Energy-absorbing-beam design for composite aircraft subfloors , 1993 .

[14]  J.F.M. Wiggenraad,et al.  Development of a Crashworthy Composite Fuselage Concept for a Commuter Aircraft , 2001 .

[15]  Jinwu Xiang,et al.  Crashworthiness design of transport aircraft subfloor using polymer foams , 2011 .

[16]  Baodong Guo,et al.  Effect of pitch angle on initial stage of a transport airplane ditching , 2013 .

[17]  Jinwu Xiang,et al.  Crashworthiness uncertainty analysis of typical civil aircraft based on Box–Behnken method , 2014 .