Application of Numerical Methods for Crashworthiness Investigation of a Large Aircraft Wing Impact with a Tree

Auteurs-es

  • Chao Zhang University of Akron, USA
  • Wieslaw K Binienda University of Akron, USA
  • Frank E Horvat University of Akron, USA
  • Wenzhi Wang Northwestern Polytechnical University image/svg+xml

Mots-clés :

Full scale modeling, Finite Element Method, crashworthiness, nonlinear wood model, Mat 143, Johnson-Cook material model, fluid dynamics, aircraft, wing, tree

Résumé

This paper demonstrates the application of a numerical methodology for a full-scale aircraft impact crashworthiness investigation. We studied the impact of an aircraft wing with a tree using LS-DYNA and ANSYS CFX. In particular, a detailed finite element model of the wing structure was represented as a box structure containing skin, spars and ribs, and fuel was represented as a distributed mass. We utilized several material models and verified them using leading-edge bird strike and wood bending experiments. Wood model Mat 143 with material parameters developed based on the wood bending test was found to be the most accurate in comparison with the experiment. We used the commercially available Computational Fluid Dynamics (CFD) software of ANSYS CFX to calculate the aerodynamic pressure distribution on the overall surface of the wing. The algorithm utilized the full three-dimensional Navier-Stokes equations for steady-state compressible fluid. LS-DYNA finite element model included aerodynamic pressures on the wings surfaces. Parametric studies showed that the tree model cannot destroy the lifting surface of the wing except the fragment of the leading edge. In every simulation scenario, the first spar of the wing cut through the tree and the upper part of the tree fell in the direction of the movement of the airplane.

Biographies de l'auteur-e

  • Chao Zhang, University of Akron, USA
    PhD Candidate, Department of Civil Engineering, University of Akron, 302 Buchtel Common, Akron, OH, 44304
  • Wieslaw K Binienda, University of Akron, USA
    Professor, Department of Civil Engineering, University of Akron, 302 Buchtel Common, Akron, OH, 44304
  • Frank E Horvat, University of Akron, USA
    PhD, Research Assistant, Department of Mechanical Engineering, University of Akron, 302 Buchtel Common, Akron, OH, 44304
  • Wenzhi Wang, Northwestern Polytechnical University
    PhD, Research Assistant, School of Aeronautics, Northwestern Polytechnical University, Xi’an, Shaanxi 710072, China.

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Publié

2013-03-30

Numéro

Vol. 5 No. 1: MCFNS March 30, 2013

Rubrique

Special Section on Forest Micro-Detail Detections and Their Seemingly Unrelated Scientific Inquiries

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Comment citer

Application of Numerical Methods for Crashworthiness Investigation of a Large Aircraft Wing Impact with a Tree. (2013). Mathematical and Computational Forestry & Natural-Resource Sciences (MCFNS), 5(1), 71-85 (14). https://mcfns.com/index.php/Journal/article/view/5.5

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