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

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

Full text not available from this repository.

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

Abstract

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.

Document Type:Article
Title:Investigation of a crash concept for CFRP transport aircraft based on tension absorption
Authors:
AuthorsInstitution or Email of Authors
Schatrow, PaulBT-SIN
Waimer, MatthiasBT-SIN
Date:19 May 2014
Journal or Publication Title:International Journal of Crashworthiness
Refereed publication:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:19
DOI:[10.1080/13588265.2014.917498]
Page Range:pp. 524-539
Publisher:Taylor & Francis
ISSN:1358-8265
Status:Published
Keywords:CFRP transport aircraft, crashworthiness, tension absorption, crash simulation, Abaqus/Explicit, kinematics model
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures and Materials
Location: Stuttgart
Institutes and Institutions:Institute of Structures and Design > Structural Integrity
Deposited By: Paul Schatrow
Deposited On:20 Aug 2014 14:47
Last Modified:20 Aug 2014 14:47

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