SIM-AM 2023

Axial compressive response of lattice-cored sandwich tubes fabricated via powder bed fusion 3D printing

  • Ushijima, Kuniharu (Tokyo University of Science)
  • Yamada, Hiroyuki (National Defense Academy of Japan)
  • Cantwell, Wesley (Khalifa University of Science and Technology)

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In this study, the axial crushing characteristics of sandwich cylinders with a BCC lattice core based on the nonlinear finite element (FE) method. In particular, the effect of core and cylinder diameter on the crushing characteristics were investigated. By introducing the lattice core sandwiched between two tubes, the deformation behaviour can be controlled axisymmetrically, leading to an increase in the average load, due to the local bending resistance. In addition, a series of lattice sandwich tubes were fabricated using a metal 3D printer, and their axial compressive responses were compared with the FE analysis, where good agreement was observed.