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Volume 36 Issue 6
Dec 2022
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Chinese Journal of High Pressure Physics  > 2022  >  36(6): 064201.
MA Mengjiao, LIU Zhifang, LI Shiqiang. Energy Absorption and Multi-Objective Optimization for Sandwich Tubes with a Corrugated Core under Axial Compression[J]. Chinese Journal of High Pressure Physics, 2022, 36(6): 064201. doi: 10.11858/gywlxb.20220554
Citation: MA Mengjiao, LIU Zhifang, LI Shiqiang. Energy Absorption and Multi-Objective Optimization for Sandwich Tubes with a Corrugated Core under Axial Compression[J]. Chinese Journal of High Pressure Physics, 2022, 36(6): 064201. doi: 10.11858/gywlxb.20220554
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Energy Absorption and Multi-Objective Optimization for Sandwich Tubes with a Corrugated Core under Axial Compression

doi: 10.11858/gywlxb.20220554

  • Institute of Applied Mechanics, College of Mechanical and Vehicle Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China

  • Received Date: 01 Apr 2022
  • Rev Recd Date: 16 Apr 2022
    • Available Online: 11 Oct 2022
  • Issue Publish Date: 05 Dec 2022
    Abstract
  • Sinusoidal corrugated thin-walled tubes are introduced as a core layer into polygonal thin-walled tubes, and quadrilateral, pentagonal and hexagonal sandwich tubes with corrugated cores are then obtained. First of all, their mechanical responses including energy absorption performance under quasi-static axial compression are studied by a combination of experiment, numerical simulation and theoretical analysis. Effects of the structural wall thickness and the wave amplitude of the core layer on the compression performance of the sandwich tube are analyzed, and the numerical simulation results agree well with the experimental ones. Then, the analytical solution for the mean compression force of the sandwich tube with corrugated cores under quasi-static compression is derived based on the simplified super folding element theory. The hexagonal sandwich tube subjected to quasi-static axial compression exhibits a deformation mode of progressive folding collapse. The theoretical mean compression force of the hexagonal sandwich tube agrees approximately with the experimental results with a relative error of 6.1%, while at a relative error within 9.8% compared to the simulation results. The specific energy absorption of the sandwich tubes with corrugated cores increases with increasing structure wall thickness and core-layer wave amplitude. For the same wave amplitude and wall thickness, the energy absorption capacity of the hexagonal sandwich tube is better than those of the quadrilateral and pentagonal sandwich tubes. Finally, with the objectives of maximum specific energy absorption and minimum initial peak force, multi-objective optimization is carried out on the core wave amplitude and structure wall thickness of the three types of sandwich tubes. The compromise and balance scheme for the maximum specific energy absorption and minimum peak crushing force is given, and the corresponding Pareto front is obtained.

     

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