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Design and dynamic response analysis of sandwich tube under internal blast loading
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Hongye LI1, Zihao LI1, Xiaofeng QIN1, Shiqiang LI1, 2
Journal of Mechanical Strength | 2025, 47(9) : 213 - 220
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Journal of Mechanical Strength | 2025, 47(9): 213-220
Design and dynamic response analysis of sandwich tube under internal blast loading
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Hongye LI1, Zihao LI1, Xiaofeng QIN1, Shiqiang LI1, 2
Affiliations
  • 1.Institute of Applied Mechanics, College of Aeronautics and Astronautics, Taiyuan University of Technology, Taiyuan 030024, China
  • 2.State Key Laboratory of Explosion Science and Safety Protection, Beijing Institute of Technology, Beijing 100081, China
Published: 2025-09-15 doi: 10.16579/j.issn.1001.9669.2025.09.021
Outline
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Sandwich structures are widely used in aerospace, national defense and other fields due to their lightweight and energy-absorbing properties, and it is of great significance to improve their anti-explosion performance under internal explosion loads.Three structures were designed, including ring sandwich tube (R), polyurethane foam sandwich tube (F), and ring-polyurethane foam hybrid sandwich tube (RF), with the non-filled sandwich tube (A) as the control group. Through internal explosion load tests and finite element simulations, the deformation modes and energy absorption capacities of the four structures under different explosive amounts were compared and analyzed, and the influence of foam filling methods on the mechanical properties of sandwich tubes was explored.The results showed that, compared with the control group, the non-dimensional deflection of structures F, R and RF was reduced to varying degrees under TNT equivalents of 24 g, 36 g and 48 g.At a TNT equivalent of 48 g, the specific energy absorption of RF structure was 5% higher than that of R structure, exhibiting the best anti-explosion performance. In addition, when the TNT equivalent was greater than 37.39 g, the foam-filled ring structure (FR) showed the strongest deformation resistance; when it was less than this value, the foam-filled structure in the gap between the ring and the tube wall (RF) had the optimal anti-explosion performance.

Sandwich tube  /  Toroidal tubular core  /  Polyurethane foam  /  Internal blast loading  /  Blast resistance performance
Hongye LI, Zihao LI, Xiaofeng QIN, Shiqiang LI. Design and dynamic response analysis of sandwich tube under internal blast loading[J]. Journal of Mechanical Strength, 2025 , 47 (9) : 213 -220 . DOI: 10.16579/j.issn.1001.9669.2025.09.021
Funding
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  • National Key Laboratory of Explosion Science and Safety Protection (Beijing Institute of Technology) Open Project(KFJJ24-03M)
Appendix
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Year 2025 volume 47 Issue 9
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Article Info
doi: 10.16579/j.issn.1001.9669.2025.09.021
  • Receive Date：2025-04-23
  • Online Date：2026-03-20
  • Published：2025-09-15
Article Data
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History
  • Received：2025-04-23
Funding
National Key Laboratory of Explosion Science and Safety Protection (Beijing Institute of Technology) Open Project(KFJJ24-03M)
Affiliations
    1.Institute of Applied Mechanics, College of Aeronautics and Astronautics, Taiyuan University of Technology, Taiyuan 030024, China
    2.State Key Laboratory of Explosion Science and Safety Protection, Beijing Institute of Technology, Beijing 100081, China

Corresponding:

LI Shiqiang, 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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