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Author:

Xiao, Lijun (Xiao, Lijun.) | Feng, Genzhu (Feng, Genzhu.) | Li, Shi (Li, Shi.) | Mu, Keliang (Mu, Keliang.) | Qin, Qinghua (Qin, Qinghua.) | Song, Weidong (Song, Weidong.)

Indexed by:

EI SCIE Scopus Engineering Village

Abstract:

Inspired by the natural hollow structures, periodic lattice structures composed of hollow struts and spheres were designed and fabricated by selective laser melting (SLM) process with 316L stainless steel. Two architecture configurations with Body-Centered Cubic (BCC) and Face-Centered Cubic (FCC) symmetry were taken into consideration. Finite element (FE) simulations based on representative volume element (RVE) models and cell-assembly models were conducted to investigate the elastic response and large deformation behavior of the hollow lattice materials, respectively. Afterwards, compression experiments were carried out on an electronic universal machine and a drop hammer (DH) system to explore the quasi-static and dynamic mechanical response of the lattice specimens. The complete deformation evolutions of the lattice samples under different loading velocities were captured through high-resolution photography and inspected by the digital imaging correlation (DIC) analysis. Both the experimental research and numerical simulations demonstrated that the hollow beam cross-sections contributed to the stable crushing response of the proposed lattice structures under either quasi-static or dynamic compression. Accordingly, the post-yield behavior of the tested lattice structures was quite smooth without any fluctuations. Meanwhile, the specific strength and energy absorption of the hollow lattice structures were found to be superior to many existed lattice materials with solid struts, and comparable with the reported triply periodic minimal surface (TPMS) lattice structures. Finally, the effect of the geometric characteristic parameters on the specific mechanical properties of the lattice structures was discussed according to the supplemental analysis by numerical simulations. © 2022

Keyword:

Additives Crystal structure Deformation Dynamic loads Dynamics Energy absorption Finite element method Numerical models Selective laser melting Struts

Author Community:

  • [ 1 ] [Xiao, Lijun]State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing; 100081, China
  • [ 2 ] [Feng, Genzhu]State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing; 100081, China
  • [ 3 ] [Li, Shi]State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing; 100081, China
  • [ 4 ] [Mu, Keliang]State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing; 100081, China
  • [ 5 ] [Qin, Qinghua]State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, Xi'an; 710049, China
  • [ 6 ] [Song, Weidong]State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing; 100081, China
  • [ 7 ] [Xiao, Lijun]Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China
  • [ 8 ] [Feng, Genzhu]Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China
  • [ 9 ] [Li, Shi]Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China
  • [ 10 ] [Mu, Keliang]Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China
  • [ 11 ] [Song, Weidong]Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China
  • [ 12 ] [Qin, Qinghua]Xi An Jiao Tong Univ, State Key Lab Strength & Vibrat Mech Struct, Xian 710049, Peoples R China

Reprint Author's Address:

  • [Xiao, L.]State Key Laboratory of Explosion Science and Technology, China;;

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Source :

International Journal of Impact Engineering

ISSN: 0734-743X

Year: 2022

Volume: 169

4 . 2 0 8

JCR@2020

ESI Discipline: ENGINEERING;

ESI HC Threshold:7

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 53

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 5

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