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금속 적층 제조 격자 구조물의 압축 변형 거동 및 재구조화에 대한 실험적 분석

Analysis on Deformation Behavior and Restructuring of Additive Manufactured Metal Lattice-Structures under Compressive Loading Condition

Journal of the Korean Society for Precision Engineering 2020;37(8):625-631.
Published online: August 1, 2020

1 부산대학교 대학원 기계공학부

2 한국생산기술연구원 디지털제조공정그룹

3 부산대학교 기계공학부, 정밀정형 및 금형가공연구소

1 Graduate School of Mechanical Engineering, Pusan National University

2 Digital Manufacturing Process Group, Korea Institute of Industrial Technology

3 School of Mechanical Engineering, ERC/NSDM, Pusan National University

#E-mail: sanghu@pusan.ac.kr, TEL: +82-51-510-1011
• Received: February 21, 2020   • Revised: May 11, 2020   • Accepted: May 13, 2020

Copyright © The Korean Society for Precision Engineering

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Citations

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  • Numerical Study on the Quantitative Structure-Property Relation of Lattice Truss Metals
    Jiyeon Kim, Dongmyoung Jung, Yongwoo Kwon
    MATERIALS TRANSACTIONS.2022; 63(10): 1317.     CrossRef
  • Analysis on Material Behavior of Metal Additive Manufactured Lattice Structures under Quarter Compression Test
    Qingye Jin, Simo Yeon, Yong Son, Sanghu Park
    Journal of the Korean Society for Precision Engineering.2021; 38(9): 667.     CrossRef

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Analysis on Deformation Behavior and Restructuring of Additive Manufactured Metal Lattice-Structures under Compressive Loading Condition
J. Korean Soc. Precis. Eng.. 2020;37(8):625-631.   Published online August 1, 2020
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Analysis on Deformation Behavior and Restructuring of Additive Manufactured Metal Lattice-Structures under Compressive Loading Condition
J. Korean Soc. Precis. Eng.. 2020;37(8):625-631.   Published online August 1, 2020
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Analysis on Deformation Behavior and Restructuring of Additive Manufactured Metal Lattice-Structures under Compressive Loading Condition
Image Image Image Image Image Image Image Image Image
Fig. 1 Lattice structures and their Maxwell stability M-value
Fig. 2 Comparison of relative density according to variation of strut diameters
Fig. 3 Detail dimensions and shapes of BCT and OCT structure
Fig. 4 (a) SEM image of SUS630 powder and (b) Schematic diagram of SLM process
Fig. 5 (a) SEM image of additive manufactured lattice specimens: BCT structures with strut diameter (D) of 0.3 and 0.5 mm, and (b) OCT with strut diameter of 0.3 and 0.5 mm
Fig. 6 Compression test equipment
Fig. 7 Comparison of stiffness of specimens according to relative density (ρ) defined in Eq. (2)
Fig. 8 Load-Displacement result of compression test, (a) BCT with strut diameter (D) = 0.3 mm, (b) BCT with D = 0.4 mm, (c) BCT with D = 0.5 mm and (d) OCT with D = 0.4 mm. BL means ‘buckled layer’
Fig. 9 Progress of restructuring by compression, (a) Initial status of lattice structure, (b) Stage of 1-layer buckling and (c) Stage of restructuring
Analysis on Deformation Behavior and Restructuring of Additive Manufactured Metal Lattice-Structures under Compressive Loading Condition