Volume 37 Issue 3
Jun 2023
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LI Chengbing, LI Rui, ZHANG Jitao, YE Qiang, LI Renfu. In-Plane Impact Response of Multi-Order Hierarchical Gradient Honeycomb Structure[J]. Chinese Journal of High Pressure Physics, 2023, 37(3): 034203. doi: 10.11858/gywlxb.20230604
Citation: LI Chengbing, LI Rui, ZHANG Jitao, YE Qiang, LI Renfu. In-Plane Impact Response of Multi-Order Hierarchical Gradient Honeycomb Structure[J]. Chinese Journal of High Pressure Physics, 2023, 37(3): 034203. doi: 10.11858/gywlxb.20230604

In-Plane Impact Response of Multi-Order Hierarchical Gradient Honeycomb Structure

doi: 10.11858/gywlxb.20230604
  • Received Date: 09 Jan 2023
  • Rev Recd Date: 27 Feb 2023
  • Accepted Date: 03 Apr 2023
  • Available Online: 19 May 2023
  • Issue Publish Date: 05 Jun 2023
  • In order to improve the in-plane mechanical properties of honeycomb structure, a hexagonal hierarchical structure is established based on the conventional hexagonal honeycomb structure. The presented hierarchical one is used to replace part of the cell layer of the conventional hexagonal honeycomb, thus form a new type of multi-order hierarchical gradient honeycomb structure. The impact response characteristics and energy absorption capacity of the in-plane hierarchical gradient honeycomb under different impact velocities are studied through explicit dynamic finite element method. The results show that the deformation mode of the hierarchical gradient honeycomb is related to the plastic collapse strength and impact velocity; the nominal stress-strain curves at the impact end and the fixed end are related to its deformation mode under different impact velocities. Different composite methods will lead to different plateau stress and specific energy absorption of hierarchical gradient honeycomb. Its plateau stress is 45.4%–63.8% higher and energy absorption is 10.8%–34.1% higher than that of the conventional hexagonal honeycomb under high-speed impact. The relative density will affect the energy absorption capacity of hierarchical gradient honeycomb.

     

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