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Study on energy absorption characteristics of biomimetic fractal sandwich plate core structure
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Di YU1, Zhaoyang WANG2, Yansong LIU2, Meng ZOU2
Journal of Mechanical Strength | 2025, 47(10) : 124 - 130
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Journal of Mechanical Strength | 2025, 47(10): 124-130
• Experimental Research·Testing Technology •
Study on energy absorption characteristics of biomimetic fractal sandwich plate core structure
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Di YU1, Zhaoyang WANG2, Yansong LIU2, Meng ZOU2
Affiliations
  • 1.School of Mechanical Engineering, Changchun Guanghua University, Changchun 130033, China
  • 2.College of Biological and Agricultural Engineering, Jilin University, Changchun 130022, China
Published: 2025-10-15 doi: 10.16579/j.issn.1001.9669.2025.10.014
Outline
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To enhance the energy absorption efficiency of conventional sandwich panels, a biomimetic tree-like fractal core (BTLFC) inspired by the dendritic fractal structure of the royal lotus leaf vein was designed. Firstly, quasi-static compression tests revealed that the 2-order BTLFC exhibited a specific energy absorption 5.69% higher and an average load 4.46% greater than traditional honeycomb cores. Secondly, a finite element numerical model of the BTLFC was established;combined with quasi-static compression test data, the finite element model error was within 2.2%, demonstrating high accuracy of the model. Finally, Latin hypercube test design, Kriging surrogate model, and the non-dominated sorting genetic algorithm-II (NSGA-II) were employed to perform multi-objective optimization on the structural parameter combinations of the BTLFC (size ratio r, bifurcation angle θ, fractal order D). The optimized BTLFC structure exhibited superior comprehensive performance, with specific energy absorption increased by 10.19%, peak crushing force reduced by 12.27%,and mass decreased by 11.79% compared to traditional honeycomb cores. The findings provide novel biomimetic design insights for developing high-performance energy absorption structures.

Leaf vein structure  /  Biomimetic design  /  Finite element  /  Energy absorption  /  Multi-objective optimization
Di YU, Zhaoyang WANG, Yansong LIU, Meng ZOU. Study on energy absorption characteristics of biomimetic fractal sandwich plate core structure[J]. Journal of Mechanical Strength, 2025 , 47 (10) : 124 -130 . DOI: 10.16579/j.issn.1001.9669.2025.10.014
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  • National Natural Science Foundation of China(52475019，52075217)
Appendix
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Year 2025 volume 47 Issue 10
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Article Info
doi: 10.16579/j.issn.1001.9669.2025.10.014
  • Receive Date：2025-04-02
  • Online Date：2026-02-11
  • Published：2025-10-15
Article Data
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  • Received：2025-04-02
Funding
National Natural Science Foundation of China(52475019，52075217)
Affiliations
    1.School of Mechanical Engineering, Changchun Guanghua University, Changchun 130033, China
    2.College of Biological and Agricultural Engineering, Jilin University, Changchun 130022, China

Corresponding:

WANG Zhaoyang, E-mail:
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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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