A novel formula for predicting the ultimate compressive strength of the cylindrically curved plates

IF 2.3 3区工程技术 Q2 ENGINEERING, MARINE

International Journal of Naval Architecture and Ocean Engineering Pub Date : 2024-01-01 DOI:10.1016/j.ijnaoe.2023.100562

Do Kyun Kim , Andy Ming King Wong , Jinha Hwang , Shen Li , Nak-Kyun Cho

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Abstract

"The present study aims to develop an empirical formula to predict the ultimate compressive strength of unstiffened cylindrically curved plates. Drawing from an extensive analysis of 400 unique curved plate scenarios under longitudinal compression, we investigated critical parameters: the flank angle (denoted as $θ$ ), plate aspect ratio (denoted as $a / b$ ), and plate slenderness ratio (denoted as $β$ ). The ANSYS Nonlinear Finite Element Method (NLFEM) was employed to assess each scenario, considering the average level of initial imperfections (denoted as $0.1 β^{2} t$ ) and configurations of one-bay and one-span. It is important to note that the models were designed without accounting for the effects of residual stresses. The simulation data generated from this analysis served as the foundation for developing our empirical formula. The proposed formula strongly agreed with the numerical simulations and experimental test results. This research provides structural engineers with a reliable predictive tool, aiding in more accurate predictions of the ultimate limit state (ULS) of curved plates during early design phases.

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预测圆柱形曲面板极限抗压强度的新公式

"本研究旨在开发一种经验公式，用于预测非加固圆柱形曲面板的极限抗压强度。通过对纵向压缩下的 400 种独特曲面板情况进行广泛分析，我们对关键参数进行了研究：侧面角（用 θ 表示）、板长宽比（用 a/b 表示）和板细长比（用 β 表示）。采用 ANSYS 非线性有限元法 (NLFEM) 评估了每种情况，考虑了初始缺陷的平均水平（表示为 0.1β2t）以及单榀和单跨的配置。需要注意的是，模型设计时没有考虑残余应力的影响。这一分析得出的模拟数据是我们制定经验公式的基础。所提出的公式与数值模拟和实验测试结果非常吻合。这项研究为结构工程师提供了可靠的预测工具，有助于在早期设计阶段更准确地预测曲面板的极限状态（ULS）。

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来源期刊

International Journal of Naval Architecture and Ocean Engineering ENGINEERING, MARINE-

CiteScore

4.90

自引率

4.50%

发文量

审稿时长

12 months

期刊介绍： International Journal of Naval Architecture and Ocean Engineering provides a forum for engineers and scientists from a wide range of disciplines to present and discuss various phenomena in the utilization and preservation of ocean environment. Without being limited by the traditional categorization, it is encouraged to present advanced technology development and scientific research, as long as they are aimed for more and better human engagement with ocean environment. Topics include, but not limited to: marine hydrodynamics; structural mechanics; marine propulsion system; design methodology & practice; production technology; system dynamics & control; marine equipment technology; materials science; underwater acoustics; ocean remote sensing; and information technology related to ship and marine systems; ocean energy systems; marine environmental engineering; maritime safety engineering; polar & arctic engineering; coastal & port engineering; subsea engineering; and specialized watercraft engineering.

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