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Study on the crack expansion law of laminated porous structure
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Shuang XU1, Qingtian DENG1, 2, Wangfei LI1, Xinbo LI1, 2, Xueli SONG1, 2, Jinpeng WEN3
Journal of Mechanical Strength | 2025, 47(2) : 28 - 36
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Journal of Mechanical Strength | 2025, 47(2): 28-36
• Fatigue∙Damage∙Fracture∙Failure Analysis •
Study on the crack expansion law of laminated porous structure
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Shuang XU1, Qingtian DENG1, 2, Wangfei LI1, Xinbo LI1, 2, Xueli SONG1, 2, Jinpeng WEN3
Affiliations
  • 1.School of Sciences, Chang’an University, Xi’an 710064, China
  • 2.Xi’an Key Laboratory of Digital Detection Technology for Structure Damage, Chang’an University, Xi’an 710064, China
  • 3.Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang 621900, China
Published: 2025-02-15 doi: 10.16579/j.issn.1001.9669.2025.02.004
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Based on two basic configurations of hexagonal and inner concave shapes, by utilizing experimental test and finite element simulation method, the crack expansion law of laminated porous structures under three-point bending was studied, the influence of cellular element angle of laying direction on failure mode, load capacity, and deformation of the laminated porous structures was discussed. The results indicate that the crack expansion path in the bilayer model deviates towards the weaker layer with less crack expansion inhibition capability. The weaker side experiences greater deformation,leading to a deviation of the model towards the stronger side. Under certain angle combinations, the bilayer model shows significantly improved load-bearing capacity and toughness compared to the corresponding single-layer model.

Laminated porous structure  /  Three-point bending experiment  /  Crack expansion  /  Polylactic acid LA material
Shuang XU, Qingtian DENG, Wangfei LI, Xinbo LI, Xueli SONG, Jinpeng WEN. Study on the crack expansion law of laminated porous structure[J]. Journal of Mechanical Strength, 2025 , 47 (2) : 28 -36 . DOI: 10.16579/j.issn.1001.9669.2025.02.004
Funding
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  • National Natural Science Foundation of China-Chinese Academy of Engineering Physics NSAF Joint Fund(U1930204)
Appendix
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Year 2025 volume 47 Issue 2
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Article Info
doi: 10.16579/j.issn.1001.9669.2025.02.004
  • Receive Date：2023-05-29
  • Online Date：2026-03-18
  • Published：2025-02-15
Article Data
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History
  • Received：2023-05-29
  • Revised：2023-08-05
Funding
National Natural Science Foundation of China-Chinese Academy of Engineering Physics NSAF Joint Fund(U1930204)
Affiliations
    1.School of Sciences, Chang’an University, Xi’an 710064, China
    2.Xi’an Key Laboratory of Digital Detection Technology for Structure Damage, Chang’an University, Xi’an 710064, China
    3.Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang 621900, China

Corresponding:

DENG Qingtian, E-mail：
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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
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