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Volume 19
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10.3390/ma19010101
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Blast Resistance of Confined Multilayer Graded Corrugated-Core Sandwich Cylindrical Shells

by
Pengbo Su
1,
Bin Han
2,*,
Yiyang Zhong
1,
Zeliang Yu
1,
Yonggang Xue
1,
Haiming Liu
1 and
Tian Jian Lu
3,4
1
Xi’an Institute of Space Radio Technology, Xi’an 710100, China
2
School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049, China
3
State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
4
MIIT Key Laboratory of Multifunctional Lightweight Materials and Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
*
Author to whom correspondence should be addressed.
Materials 2026, 19(1), 101; https://doi.org/10.3390/ma19010101 (registering DOI)
Submission received: 29 November 2025 / Revised: 22 December 2025 / Accepted: 25 December 2025 / Published: 27 December 2025
(This article belongs to the Special Issue Mechanical Behavior and Numerical Simulation of Sandwich Composites (Second Edition))
Versions Notes

Abstract

A graded multilayer corrugated-core sandwich cylindrical shell is proposed as an innovative blast-resistant container to resist internal blast loading. The blast resistance performance of both uniform and graded multilayer corrugated shells was systematically investigated through finite element analysis. Results revealed that sandwich shells featuring an internally thick and externally thin core wall arrangement exhibited superior blast resistance. This configuration optimally aligns with the natural attenuation behavior of blast pressure, which gradually decreases from inner to outer layers during multilayer core collapse. Structures with core layer height gradients, characterized by internally high and externally low layers, also demonstrated enhanced performance under blast loading. While increasing the gradient magnitude generally improves blast resistance, this benefit diminishes with escalating blast intensity. Notably, wall-thickness-graded structures consistently outperformed height-graded configurations. Finally, a radial basis function surrogate model combined with adaptive simulated annealing optimization was employed to identify optimal thickness-graded cylindrical shell configurations tailored for either maximum blast resistance or minimum structural mass.
Keywords: blast-resistant container; gradient multilayer corrugated sandwich shell; surrogate-based optimization blast-resistant container; gradient multilayer corrugated sandwich shell; surrogate-based optimization

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MDPI and ACS Style

Su, P.; Han, B.; Zhong, Y.; Yu, Z.; Xue, Y.; Liu, H.; Lu, T.J. Blast Resistance of Confined Multilayer Graded Corrugated-Core Sandwich Cylindrical Shells. Materials 2026, 19, 101. https://doi.org/10.3390/ma19010101

AMA Style

Su P, Han B, Zhong Y, Yu Z, Xue Y, Liu H, Lu TJ. Blast Resistance of Confined Multilayer Graded Corrugated-Core Sandwich Cylindrical Shells. Materials. 2026; 19(1):101. https://doi.org/10.3390/ma19010101

Chicago/Turabian Style

Su, Pengbo, Bin Han, Yiyang Zhong, Zeliang Yu, Yonggang Xue, Haiming Liu, and Tian Jian Lu. 2026. "Blast Resistance of Confined Multilayer Graded Corrugated-Core Sandwich Cylindrical Shells" Materials 19, no. 1: 101. https://doi.org/10.3390/ma19010101

APA Style

Su, P., Han, B., Zhong, Y., Yu, Z., Xue, Y., Liu, H., & Lu, T. J. (2026). Blast Resistance of Confined Multilayer Graded Corrugated-Core Sandwich Cylindrical Shells. Materials, 19(1), 101. https://doi.org/10.3390/ma19010101

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