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Volume 33 Issue 5
Sep 2019
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Chinese Journal of High Pressure Physics  > 2019  >  33(5): 055902.
FENG Genzhu, YU Boli, LI Shiqiang, LIU Zhifang. Deformation and Energy Absorption of Multi-Hierarchical Sandwich Structures[J]. Chinese Journal of High Pressure Physics, 2019, 33(5): 055902. doi: 10.11858/gywlxb.20180707
Citation: FENG Genzhu, YU Boli, LI Shiqiang, LIU Zhifang. Deformation and Energy Absorption of Multi-Hierarchical Sandwich Structures[J]. Chinese Journal of High Pressure Physics, 2019, 33(5): 055902. doi: 10.11858/gywlxb.20180707
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Deformation and Energy Absorption of Multi-Hierarchical Sandwich Structures

doi: 10.11858/gywlxb.20180707
  • 1.

    Institute of Applied Mechanics, Taiyuan University of Technology, Taiyuan 030024, China

  • 2.

    Shanxi Key Laboratory of Material Strength and Structural Impact, College of Mechanics, Taiyuan University of Technology, Taiyuan 030024, China

  • Received Date: 27 Dec 2018
  • Rev Recd Date: 15 Jan 2019
    Abstract
  • The deformation law and energy absorption performance of the multi-hierarchical sandwich structure under quasi-static compression have been studied by numerical and theoretical methods. The calculation formula of the critical failure load of the structure is established and compared with the numerical simulation results. The theoretical prediction is in good agreement with the numerical simulation results. Finite element models of the hierarchical corrugated core sandwich structure were established. The effects of core thickness on the deformation mode and energy absorption performance of secondary structure under quasi-static compression load were studied and compared with that of the primary structure.The results show that the energy absorption properties of the secondary core structure are significantly better than that of the primary core layer. As the thickness of the core increases, the specific energy absorption of the second order structure for single-layer is higher than that of the second order structure for two-layers and three-layers, and the specific energy absorption of the second order structure for two-layers is slightly higher than that of the second order structure for three-layers.

     

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