Crashworthiness simulation analysis and evaluation of wide-body aircraft fuselage section

Abstract

Abstract:

For the requirements of crashworthiness design, verification and certification of wide-body aircraft, different failure modes of fuselage sections are analyzed. Finite element model of double decks wide-body aircraft fuselage section is developed and the dynamic responses of wide-body fuselage section subjected to vertical impact velocity of 9.14 m/s are analyzed. The failure modes, acceleration responses and energy -absorbing characteristics are obtained and analyzed. Simulation results show that the cabins of wide-body aircrafts are well maintained for the two different cases, and the acceleration responses of junctions between seats and floor are within the limits of human tolerance. The energy absorbed by the same fuselage structures are different for two cases, the energy-absorbing capability of cargo floor structures can be improved by optimizing design, and thus the wide-body aircraft crashworthiness performance can be enhanced, which has a certain reference value for crashworthiness design, analysis and evaluation of wide-body aircraft fuselage section.

Key words: wide-body aircraft, crashworthiness, finite element method, failure mode, acceleration response, energyabsorbing characteristics

CLC Number:

V223

ZHANG Xiaomin, MA Congyao, HUO Yujia, MOU Haolei. Crashworthiness simulation analysis and evaluation of wide-body aircraft fuselage section[J]. .

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