Analytical, experimental, and numerical analyses of the buckling of composite ring-stiffened steel cylinders

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2025-03-25 DOI:10.1016/j.tws.2025.113175

Huayong Chang , Lihui Wang , Yunsen Hu , Chao Kang , Kechun Shen , Jian Zhang

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引用次数: 0

Abstract

In the current research, the buckling loads and modes of composite ring-stiffened steel cylinders were studied when subjected to hydrostatic pressure. Analytical formulas for forecasting the linear buckling load of ring-stiffened cylinders were derived and validated. Moreover, numerical and response surface analyses were conducted to determine the nonlinear knockdown factor (K_non). Pairs of nominally identical ring-stiffened and unreinforced steel cylinders were manufactured, measured, and tested, and corresponding numerical models were developed. The results from the analytical, experimental, and numerical studies were consistently in agreement. Reinforcement with composite ring stiffeners enhanced the experimental buckling loads by 258.8 % but increased weight by only approximately 17 %. Parametric analyses were also conducted to assess the impact of the composite ring's thickness and width on nonlinear buckling loads and postbuckling modes. Although the composite ring stiffeners enhanced the global structural stability and load capacity of plain cylinders, they also caused transitions in the postbuckling mode from global buckling to coupled, inter-ring, or mono-cell buckling.

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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.