Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Vulnerability Analysis of Aircraft Fuselage Subjected to Internal Explosion

Vulnerability Analysis of Aircraft Fuselage Subjected to Internal Explosion Vulnerability Analysis of Aircraft Fuselage Subjected to Internal Explosion The most important task in tests of resistance of aircraft structures to the terrorist threats is to determine the vulnerability of thin-walled structures to the blast wave load. For obvious reasons, full-scale experimental investigations are carried out exceptionally. In such cases, numerical simulations are very important. They make it possible to tune model parameters, yielding proper correlation with experimental data. Basing on preliminary numerical analyses - experiment can be planned properly. The paper presents some results of dynamic simulations of finite element (FE) models of a medium-size aircraft fuselage. Modeling of C4 detonation is also discussed. Characteristics of the materials used in FE calculations were obtained experimentally. The paper describes also the investigation of sensitivity of results of an explicit dynamic study to FE model parameters in a typical fluid-structure interaction (FSI) problem (detonation of a C4 explosive charge). Three cases of extent of the Eulerian mesh (the domain which contains air and a charge) were examined. Studies have shown very strong sensitivity of the results to chosen numerical models of materials, formulations of elements, assumed parameters etc. Studies confirm very strong necessity of the correlation of analysis results with experimental data. Without such a correlation, it is difficult to talk about the validation of results obtained from the "explicit" codes. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archive of Mechanical Engineering de Gruyter

Vulnerability Analysis of Aircraft Fuselage Subjected to Internal Explosion

Download PDF
14 pages

Loading next page...
 
/lp/de-gruyter/vulnerability-analysis-of-aircraft-fuselage-subjected-to-internal-DZNKpVfHwo

References

References for this paper are not available at this time. We will be adding them shortly, thank you for your patience.

Publisher
de Gruyter
Copyright
Copyright © 2011 by the
ISSN
0004-0738
DOI
10.2478/v10180-011-0024-4
Publisher site
See Article on Publisher Site

Abstract

Vulnerability Analysis of Aircraft Fuselage Subjected to Internal Explosion The most important task in tests of resistance of aircraft structures to the terrorist threats is to determine the vulnerability of thin-walled structures to the blast wave load. For obvious reasons, full-scale experimental investigations are carried out exceptionally. In such cases, numerical simulations are very important. They make it possible to tune model parameters, yielding proper correlation with experimental data. Basing on preliminary numerical analyses - experiment can be planned properly. The paper presents some results of dynamic simulations of finite element (FE) models of a medium-size aircraft fuselage. Modeling of C4 detonation is also discussed. Characteristics of the materials used in FE calculations were obtained experimentally. The paper describes also the investigation of sensitivity of results of an explicit dynamic study to FE model parameters in a typical fluid-structure interaction (FSI) problem (detonation of a C4 explosive charge). Three cases of extent of the Eulerian mesh (the domain which contains air and a charge) were examined. Studies have shown very strong sensitivity of the results to chosen numerical models of materials, formulations of elements, assumed parameters etc. Studies confirm very strong necessity of the correlation of analysis results with experimental data. Without such a correlation, it is difficult to talk about the validation of results obtained from the "explicit" codes.

Journal

Archive of Mechanical Engineering – de Gruyter

Published: Jan 1, 2011

References

  • Investigation of Vulnerability of Aircraft Structure and Materials Towards Cabin Explosions
    C. Wentzel
  • Safety in the sky: Designing bomb-resistant baggage containers
    S. Ashley
  • Vulnerability and Survivability Analysis of Aircraft Fuselage Subjected to Internal Detonations
    Y. Moon
  • Structural Response of a Blast Loaded Fuselage
    A. Dacko