Home Journals Articles Updates About
CN
image
收藏切换
Fracture behavior study of the Octet-truss lattice structures and structural toughening design
收藏切换
PDF
Wanqing HE1, 2, Yuhang WANG1, 2, Weihong LUO1, 2, Zhiyong WANG1, 2
Journal of Mechanical Strength | 2025, 47(2) : 130 - 137
Less
收藏切换
Journal of Mechanical Strength | 2025, 47(2): 130-137
• Optimization∙Reliability •
Fracture behavior study of the Octet-truss lattice structures and structural toughening design
Full
Wanqing HE1, 2, Yuhang WANG1, 2, Weihong LUO1, 2, Zhiyong WANG1, 2
Affiliations
  • 1.Institute of Applied Mechanics, College of Aeronautics and Astronautics, Taiyuan University of Technology, Taiyuan 030024, China
  • 2.Shanxi Key Laboratory of Material Strength & Structural Impact, Taiyuan University of Technology, Taiyuan 030024, China
Published: 2025-02-15 doi: 10.16579/j.issn.1001.9669.2025.02.016
Outline
收藏切换

Octet-truss lattice structure is one of the preferred materials in engineering field with light, high strength and high toughness properties.Three-point bending experiments were carried out on Ti6Al4V Octet-truss lattice structure with shallow pre-crack, and the fracture process was observed by digital image correlation (DIC) technique.To further study the fracture toughness of Octet-truss lattice structure, the fracture behavior of the structure under three-point bending load was analyzed by finite element method.The mechanical response of the truss member for the structure was characterized by the isotropic elastoplastic mechanical model.The validity of the finite element model was verified by experiments.Based on the elastic-plastic fracture behavior of the structure, the J-integral method was used to calculate the fracture toughness of the Octet-truss lattice structures.The results show that the fracture toughness of the Octet-truss lattice structure increases linearly with the relative density and the square root of the truss length.For the truss member at the crack tip, truss in different planes have different stress states and deformation modes with the same cross-sectional size.According to the failure mode of the structure,the stress state of truss from different planes is balanced by optimizing the proportion of the cross-section size, which can optimize toughness of the lattice structure with same relative density.

Octet-truss lattice structure  /  Digital image correlation  /  J-integral  /  Numerical simulation  /  Structural toughening design
Wanqing HE, Yuhang WANG, Weihong LUO, Zhiyong WANG. Fracture behavior study of the Octet-truss lattice structures and structural toughening design[J]. Journal of Mechanical Strength, 2025 , 47 (2) : 130 -137 . DOI: 10.16579/j.issn.1001.9669.2025.02.016
Funding
Less
  • National Natural Science Foundation of China Project(12272257)
  • Basic Research Program of Shanxi Province(202203021211169)
Appendix
Less
Year 2025 volume 47 Issue 2
PDF
65
33
Cite this Article
BibTeX
Article Info
doi: 10.16579/j.issn.1001.9669.2025.02.016
  • Receive Date：2023-03-10
  • Online Date：2026-03-18
  • Published：2025-02-15
Article Data
Affiliations
History
  • Received：2023-03-10
  • Revised：2023-05-07
Funding
National Natural Science Foundation of China Project(12272257)
Basic Research Program of Shanxi Province(202203021211169)
Affiliations
    1.Institute of Applied Mechanics, College of Aeronautics and Astronautics, Taiyuan University of Technology, Taiyuan 030024, China
    2.Shanxi Key Laboratory of Material Strength & Structural Impact, Taiyuan University of Technology, Taiyuan 030024, China

Corresponding:

WANG Zhiyong, E-mail：
References
Share
https://castjournals.cast.org.cn/joweb/jxqd/EN/10.16579/j.issn.1001.9669.2025.02.016
Share to
QR

Scan QR to access full text

Cite this article
BibTeX
Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
关闭全屏
  • BibTeX
  • EndNote
  • RefWorks
  • TxT
Links
Articles
Latest Articles
Most Read
Collections
Updates
Events
News
Multimedia
About
About Us
Contact
No. 86 Xueyuan South Road, Haidian District, Beijing
100081
010-62199257
qkjq@cast.org.cn

Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House