Development and performance analysis of boundary-reinforced carbon fiber-based buoyancy structures

IF 6.6 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2025-09-11 DOI:10.1016/j.tws.2025.113965

Guocai Yu , Dayao Meng , Wendong Li , Fanglin Cong , Benxin Wang , Hongyu Xiao , Chengyang Wang , Yang Jin , Xi Zhu , Linzhi Wu

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引用次数: 0

Abstract

The current rescue depth for sea operations is typically limited to 450 meters, as efforts beyond this depth are generally considered impractical. Buoyancy materials, which occupy the largest volume in deep-submergence rescue vehicles, play a critical role in providing flotation and influencing the vehicles' operational endurance. In this study, a lightweight and high-strength carbon fiber-based buoyancy structure (CFBS) was developed to enhance the pressure resistance of underwater vehicles in rescue systems. The stress distribution and failure modes of the CFBS under hydrostatic pressure were systematically analyzed, with experimental results showing strong agreement with numerical simulations. Compared to CFBSs with uniform wall thickness, the boundary-reinforced design demonstrated a 57.67 % improvement in hydrostatic pressure resistance at comparable densities. The fabricated small-scale structural component demonstrated a density of 0.392 g/cm³ and a hydrostatic pressure strength of 17.99 MPa, while the large-scale structural component exhibited a density of 0.296 g/cm³ and a hydrostatic pressure strength of 12 MPa, outperforming other buoyancy materials of similar class. These findings provide a robust foundation for advancing composite material technologies in underwater applications.

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边界增强碳纤维基浮力结构的研制与性能分析

目前海上救援作业的深度通常被限制在450米，因为超过这个深度的行动通常被认为是不切实际的。浮力材料是深潜救援救援船中体积最大的材料，对救援救援船的浮力起着至关重要的作用，影响着救援救援船的使用寿命。为了提高救援系统中水下航行器的抗压能力，本研究开发了一种轻质高强碳纤维浮力结构（CFBS）。系统分析了静水压力下循环流化床锅炉的应力分布和破坏模式，实验结果与数值模拟结果吻合较好。与壁厚均匀的cfbs相比，边界增强设计在同等密度下的静水压力阻力提高了57.67%。制备的小型结构构件的密度为0.392 g/cm³，静水压力强度为17.99 MPa，而大型结构构件的密度为0.296 g/cm³，静水压力强度为12 MPa，优于同类浮力材料。这些发现为推进复合材料技术在水下的应用提供了坚实的基础。

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.