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

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Title: Blast Resistance of Confined Multilayer Graded Corrugated-Core Sandwich Cylindrical Shells.
Authors: Su, Pengbo1 (AUTHOR), Han, Bin2 (AUTHOR) hanbinghost@xjtu.edu.cn, Zhong, Yiyang1,3 (AUTHOR), Yu, Zeliang1,4 (AUTHOR), Xue, Yonggang1 (AUTHOR), Liu, Haiming1,2 (AUTHOR), Lu, Tian Jian3,4 (AUTHOR)
Source: Materials (1996-1944). Jan2026, Vol. 19 Issue 1, p101. 25p.
Subjects: Cylindrical shells, Sandwich construction (Materials), Simulated annealing, Prediction models, Finite element method
Abstract: Highlights: What are the main findings? Graded multilayer corrugated-core shells enhance resistance to internal blasts.. An inner-thick/outer-thin wall gradient reduces outer-facesheet deformation by up to 75%. Thickness grading performs better than height grading under the studied blast loads. Surrogate modeling with ASA optimization identifies optimal thickness distributions. What are the implications of the main findings? Aligning core strength with blast attenuation promotes more uniform and complete layer compaction. Optimized designs can reduce mass by ~18% at a prescribed deformation limit. Alternatively, they can reduce deformation by ~20% at a prescribed mass limit. 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. [ABSTRACT FROM AUTHOR]
Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 190787107
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PubTypeId: academicJournal
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  Label: Title
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  Data: Blast Resistance of Confined Multilayer Graded Corrugated-Core Sandwich Cylindrical Shells.
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  Data: <searchLink fieldCode="AR" term="%22Su%2C+Pengbo%22">Su, Pengbo</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Han%2C+Bin%22">Han, Bin</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> hanbinghost@xjtu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Zhong%2C+Yiyang%22">Zhong, Yiyang</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yu%2C+Zeliang%22">Yu, Zeliang</searchLink><relatesTo>1,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xue%2C+Yonggang%22">Xue, Yonggang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Haiming%22">Liu, Haiming</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lu%2C+Tian+Jian%22">Lu, Tian Jian</searchLink><relatesTo>3,4</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Materials+%281996-1944%29%22">Materials (1996-1944)</searchLink>. Jan2026, Vol. 19 Issue 1, p101. 25p.
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  Data: <searchLink fieldCode="DE" term="%22Cylindrical+shells%22">Cylindrical shells</searchLink><br /><searchLink fieldCode="DE" term="%22Sandwich+construction+%28Materials%29%22">Sandwich construction (Materials)</searchLink><br /><searchLink fieldCode="DE" term="%22Simulated+annealing%22">Simulated annealing</searchLink><br /><searchLink fieldCode="DE" term="%22Prediction+models%22">Prediction models</searchLink><br /><searchLink fieldCode="DE" term="%22Finite+element+method%22">Finite element method</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Highlights: What are the main findings? Graded multilayer corrugated-core shells enhance resistance to internal blasts.. An inner-thick/outer-thin wall gradient reduces outer-facesheet deformation by up to 75%. Thickness grading performs better than height grading under the studied blast loads. Surrogate modeling with ASA optimization identifies optimal thickness distributions. What are the implications of the main findings? Aligning core strength with blast attenuation promotes more uniform and complete layer compaction. Optimized designs can reduce mass by ~18% at a prescribed deformation limit. Alternatively, they can reduce deformation by ~20% at a prescribed mass limit. 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. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.3390/ma19010101
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      – Code: eng
        Text: English
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        PageCount: 25
        StartPage: 101
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      – SubjectFull: Cylindrical shells
        Type: general
      – SubjectFull: Sandwich construction (Materials)
        Type: general
      – SubjectFull: Simulated annealing
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      – SubjectFull: Prediction models
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      – SubjectFull: Finite element method
        Type: general
    Titles:
      – TitleFull: Blast Resistance of Confined Multilayer Graded Corrugated-Core Sandwich Cylindrical Shells.
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            NameFull: Su, Pengbo
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            NameFull: Han, Bin
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            – D: 01
              M: 01
              Text: Jan2026
              Type: published
              Y: 2026
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              Value: 19
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