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Investigation of a crash concept for CFRP transport aircraft based on tension absorption

Schatrow, Paul und Waimer, Matthias (2014) Investigation of a crash concept for CFRP transport aircraft based on tension absorption. International Journal of Crashworthiness, 19 (5), Seiten 524-539. Taylor & Francis. DOI: [10.1080/13588265.2014.917498]. ISSN 1358-8265.

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Offizielle URL: http://www.tandfonline.com/doi/pdf/10.1080/13588265.2014.917498

Kurzfassung

Transport aircraft made of carbon fibre reinforced plastics (CFRP) have to provide an equivalent crashworthiness compared to today’s aluminium aircraft designs. However, CFRP structures typically show brittle failure behaviour under complex loading conditions and little energy absorption, whereas aluminium structures provide comparably high energy absorption due to their ductile failure characteristics. Improved crashworthiness for CFRP fuselages can be obtained by the installation of special crash devices, which are designed for energy absorption by progressive failure in compression, tension or bending. The realisation of crashworthy CFRP fuselage designs with the focus on compression or bending absorbers is often associated with significant mass penalty compared to the purely static sizing of the corresponding fuselage structure. In this context, an alternative crash kinematics was developed and numerically investigated in which most of the kinetic energy is dissipated by tension absorption in the sub-cargo area of a fuselage structure. The numerical study was performed on the basis of a purely vertical impact with a two-bay fuselage section using the explicit finite element (FE) solver Abaqus/Explicit. The simulation results show for the developed crash kinematics several advantages, e.g. reduced mass penalty, with the tension absorption concept compared to crash concepts that use energy absorption by progressive crushing in the sub-cargo area.

Dokumentart:Zeitschriftenbeitrag
Titel:Investigation of a crash concept for CFRP transport aircraft based on tension absorption
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Schatrow, PaulBT-SIN
Waimer, MatthiasBT-SIN
Datum:19 Mai 2014
Erschienen in:International Journal of Crashworthiness
Referierte Publikation:Ja
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:19
DOI :[10.1080/13588265.2014.917498]
Seitenbereich:Seiten 524-539
Verlag:Taylor & Francis
ISSN:1358-8265
Status:veröffentlicht
Stichwörter:CFRP transport aircraft, crashworthiness, tension absorption, crash simulation, Abaqus/Explicit, kinematics model
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Flugzeuge
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L AR - Aircraft Research
DLR - Teilgebiet (Projekt, Vorhaben):L - Strukturen und Werkstoffe
Standort: Stuttgart
Institute & Einrichtungen:Institut für Bauweisen und Strukturtechnologie > Strukturelle Integrität
Hinterlegt von: Paul Schatrow
Hinterlegt am:20 Aug 2014 14:47
Letzte Änderung:20 Aug 2014 14:47

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