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Volume 35 Issue 3
Jun 2021
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Chinese Journal of High Pressure Physics  > 2021  >  35(3): 034201.
LI Xue, XIAO Lijun, SONG Weidong. Dynamic Behavior of 3D Printed Graded Gyroid Structures under Impact Loading[J]. Chinese Journal of High Pressure Physics, 2021, 35(3): 034201. doi: 10.11858/gywlxb.20210701
Citation: LI Xue, XIAO Lijun, SONG Weidong. Dynamic Behavior of 3D Printed Graded Gyroid Structures under Impact Loading[J]. Chinese Journal of High Pressure Physics, 2021, 35(3): 034201. doi: 10.11858/gywlxb.20210701
shu

Dynamic Behavior of 3D Printed Graded Gyroid Structures under Impact Loading

doi: 10.11858/gywlxb.20210701

  • State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

  • Received Date: 04 Jan 2021
  • Rev Recd Date: 19 Jan 2021
    Abstract
  • The quasi-static and dynamic compression properties of uniform and graded Gyroid structures were studied by using the commercial software ANSYS/LS-DYNA. The stress distributions, deformation mode, loading bearing and energy absorption abilities were analyzed accordingly. Some numerical material parameters of SLM (selective laser melting) printed 316L stainless steel was obtained by tensile tests. Finite element models of Gyroid structure were established, and the dynamic mechanical response was numerically simulated. The results indicate that the uniform structure performs relatively uniform deformation patterns, while the graded specimen shows deformation propagation from the low density end to the high density end. All the studied structures show obvious strain rate sensitivities, which is the most apparent in the negative structures. Moreover, the negative gradient structure absorbs the most energy and possesses the smallest supporting stresses compared with the other structures under the similar loading velocity, which denotes that the negative arrangement is the perfect protect structures. The results can provide guidance for the design of the protect structures under impact loading.

     

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