<p>In order to improve the bearing capacity and energy absorption capacity of out-of-plane of honeycomb structure, based on the conventional hexagonal honeycomb structure (H1), a ribbed plate structure (L2) is added to form a new type of honeycomb filled with ribbed plate structure, abbreviated as HFRP. The impact response characteristics and energy absorption capacity of HFRP under different impact velocities and impact angles are studied by using the explicit dynamic finite element method. The results show that the deformation mode of HFRP structure is affected by the inertia effect caused by high-speed impact; different impact angles also lead to different deformation patterns. The nominal stress–strain curve of the impact end of HFRP structure is related to the impact angle under different impact velocities and corresponds with the deformation mode. There is a coupling effect between L2 and H1; with the introduction of L2, the specific energy absorption is 91.4% higher and load-bearing capacity is 89.7% higher than that of HFRP. The plateau stress of the impact end and fixed end of HFRP is related to the impact velocity and impact angle; the impact angle and impact velocities will affect the energy absorption capacity of HFRP. The relative density will affect the mechanical properties of the honeycomb filled with ribbed plate.</p>

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Analysis of impact response characteristics of honeycomb filled with ribbed plate structure

  • Chengbing Li,
  • Xupeng Feng,
  • Rui Li,
  • Ke Xiao,
  • Renfu Li

摘要

In order to improve the bearing capacity and energy absorption capacity of out-of-plane of honeycomb structure, based on the conventional hexagonal honeycomb structure (H1), a ribbed plate structure (L2) is added to form a new type of honeycomb filled with ribbed plate structure, abbreviated as HFRP. The impact response characteristics and energy absorption capacity of HFRP under different impact velocities and impact angles are studied by using the explicit dynamic finite element method. The results show that the deformation mode of HFRP structure is affected by the inertia effect caused by high-speed impact; different impact angles also lead to different deformation patterns. The nominal stress–strain curve of the impact end of HFRP structure is related to the impact angle under different impact velocities and corresponds with the deformation mode. There is a coupling effect between L2 and H1; with the introduction of L2, the specific energy absorption is 91.4% higher and load-bearing capacity is 89.7% higher than that of HFRP. The plateau stress of the impact end and fixed end of HFRP is related to the impact velocity and impact angle; the impact angle and impact velocities will affect the energy absorption capacity of HFRP. The relative density will affect the mechanical properties of the honeycomb filled with ribbed plate.