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Volume 40 Issue 12
Dec.  2014
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Journal of Beijing University of Aeronautics and Astronautics  > 2014  >  40(12): 1719-1724.
Luo Haibo, Yan Ying, Meng Xiangji, et al. Progressive failure analysis and crashworthiness experiment for composite structural discreteness[J]. Journal of Beijing University of Aeronautics and Astronautics, 2014, 40(12): 1719-1724. doi: 10.13700/j.bh.1001-5965.2014.0008(in Chinese)
Citation: Luo Haibo, Yan Ying, Meng Xiangji, et al. Progressive failure analysis and crashworthiness experiment for composite structural discreteness[J]. Journal of Beijing University of Aeronautics and Astronautics, 2014, 40(12): 1719-1724. doi: 10.13700/j.bh.1001-5965.2014.0008(in Chinese)
shu

Progressive failure analysis and crashworthiness experiment for composite structural discreteness

doi: 10.13700/j.bh.1001-5965.2014.0008
  • 1.

    School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

  • 2. Corporation of Harbin Aircraft Industry Group, Harbin 150066, China

  • Received Date: 09 Jan 2014
  • Publish Date: 20 Dec 2014
    Abstract
  • The experimental crashworthiness research on energy-absorbing discrete structures of composite was carried out. The corresponding energy absorption load-displacement curves, the average load, the peak load and the total energy-absorbing parameters were all obtained. Considering the anisotropic constitutive relation of composites, the secondary development of the finite element software was applied. Considering the Hashin failure criterion with the stiffness degradation theory included, the progressive failure numerical analysis was discussed for the structural discreteness. Based on the extended failure criterion, a gradually weakness of layup triggers links style was set up respectively, also the average load of energy-absorbing evaluation parameter was obtained by numerical simulation, which is 361.10 kN. Compared with the experimental results, the relative error is less than 7%, and the numerical simulation results agree well with those of the experiments, which indicate the feasibility and effectiveness of this method to estimate the crashworthiness of composite structural discreteness.

     

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