An effective method for the buckling analysis of composite cylindrical shells under nonuniform external pressure

IF 6.6 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2025-09-10 DOI:10.1016/j.tws.2025.113961

Fanglin Cong , Benxin Wang , Guocai Yu , Yang Jin , Zixu Zhu , Chengyang Wang , Xiao He , Xi Zhu , Linzhi Wu

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引用次数: 0

Abstract

Nonuniform external pressure significantly impacts the load-bearing capacity of cylindrical shell structures. This study introduces an effective method for analyzing the buckling behavior of composite cylindrical shells subjected to such pressure. This method employs nonuniform load coefficients (

k_{d}

) to capture the effects of varying external pressure distributions, from hydrostatic to nonuniform, on performance of the shell. The findings show that as the

k_{d}

value increases, the critical buckling pressure of composite shells decreases under different nonuniform pressures. Additionally, this method facilitates parameter analysis and optimization. The study identifies the optimal layup configuration (

[90_{2} / 70]

) for composite cylindrical shells, resulting in a 72% increase in critical buckling pressure. Overall, this work enhances the understanding of nonuniform buckling behavior, offering valuable insights for the effective design of composite cylindrical shells in engineering applications.

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非均匀外压作用下复合材料圆柱壳屈曲分析的有效方法

非均匀外压力对圆柱壳结构的承载能力有显著影响。本文介绍了一种分析复合材料圆柱壳在这种压力作用下屈曲行为的有效方法。该方法采用非均匀载荷系数（kd）来捕捉从静水到非均匀的不同外部压力分布对壳体性能的影响。结果表明：在不同非均匀压力下，随着kd值的增大，复合材料壳的临界屈曲压力减小；此外，该方法便于参数分析和优化。该研究确定了复合圆柱壳的最佳铺层配置（[902/70]），使临界屈曲压力提高了72%。总的来说，这项工作增强了对非均匀屈曲行为的理解，为工程应用中复合材料圆柱壳的有效设计提供了有价值的见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Thin-Walled Structures 工程技术-工程：土木

CiteScore

9.60

自引率

20.30%

发文量

801

审稿时长

66 days

期刊介绍： Thin-walled structures comprises an important and growing proportion of engineering construction with areas of application becoming increasingly diverse, ranging from aircraft, bridges, ships and oil rigs to storage vessels, industrial buildings and warehouses. Many factors, including cost and weight economy, new materials and processes and the growth of powerful methods of analysis have contributed to this growth, and led to the need for a journal which concentrates specifically on structures in which problems arise due to the thinness of the walls. This field includes cold– formed sections, plate and shell structures, reinforced plastics structures and aluminium structures, and is of importance in many branches of engineering. The primary criterion for consideration of papers in Thin–Walled Structures is that they must be concerned with thin–walled structures or the basic problems inherent in thin–walled structures. Provided this criterion is satisfied no restriction is placed on the type of construction, material or field of application. Papers on theory, experiment, design, etc., are published and it is expected that many papers will contain aspects of all three.