<p>This study stands out by proposing a novel multi-layered hybridization strategy using different lattice cell types (KC, SC, FCC) positioned concentrically. Unlike traditional studies focusing on single-type or homogeneous lattice structures, this work introduces and compares uniquely configured hybrid architectures that significantly enhance energy absorption efficiency through combined deformation mechanisms. Four new types of hybrid structures are proposed using Kelvin Cells (KC), Simple Cubic (SC) and Face-Centered Cubic (FCC) unit cells. Initially, the hybrid structures were designed to be in different positions from each other and were produced using fusion filament production technology with Acrylonitrile Butadiene Styrene filaments under the same production conditions and pressure tests were conducted to determine the energy absorption performances of the hybridized cage structures with different cage types and the results were examined. As a result of the quasi-static compression test, it was determined that the TYPE-2 structure designed compared to a similar external lattice structure had 45% higher strength and 18% higher energy absorption than TYPE-1. It was also found that the TYPE-4 lattice structure, which has a similar external lattice structure but with modified positions and sizes of the lattice structures inside, has approximately 11% higher fracture strength and 3.5 times higher energy absorption value than the TYPE-3 lattice structure. As a result, it was determined that changing the position and dimensions of the cage structures used as reinforcement elements in the interior parts affects the maximum force resistance, crushing behavior and energy absorption performance of the cage structures.</p>

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Energy absorption characteristics of 3D printed polymeric hybrid lattice structures fabricated by additive manufacturing

  • Mehmet Kopar,
  • Medeni Sömer

摘要

This study stands out by proposing a novel multi-layered hybridization strategy using different lattice cell types (KC, SC, FCC) positioned concentrically. Unlike traditional studies focusing on single-type or homogeneous lattice structures, this work introduces and compares uniquely configured hybrid architectures that significantly enhance energy absorption efficiency through combined deformation mechanisms. Four new types of hybrid structures are proposed using Kelvin Cells (KC), Simple Cubic (SC) and Face-Centered Cubic (FCC) unit cells. Initially, the hybrid structures were designed to be in different positions from each other and were produced using fusion filament production technology with Acrylonitrile Butadiene Styrene filaments under the same production conditions and pressure tests were conducted to determine the energy absorption performances of the hybridized cage structures with different cage types and the results were examined. As a result of the quasi-static compression test, it was determined that the TYPE-2 structure designed compared to a similar external lattice structure had 45% higher strength and 18% higher energy absorption than TYPE-1. It was also found that the TYPE-4 lattice structure, which has a similar external lattice structure but with modified positions and sizes of the lattice structures inside, has approximately 11% higher fracture strength and 3.5 times higher energy absorption value than the TYPE-3 lattice structure. As a result, it was determined that changing the position and dimensions of the cage structures used as reinforcement elements in the interior parts affects the maximum force resistance, crushing behavior and energy absorption performance of the cage structures.