水下无人系统学报2026，Vol.34Issue(2)：236-245,10.DOI:10.11993/j.issn.2096-3920.2025-0158
厚壁充液加压管道流固耦合振动特性分析
Fluid-Structure Interaction Vibration Characteristics Analysis of Thick-Walled Pressurized Fluid-Filled Pipes
摘要
Abstract
The theoretical derivation and frequency-domain solution for axial fluid-structure interaction vibration of thick-walled pressurized fluid-filled pipes in marine engineering were carried out.The proposed calculation method was validated by comparison with literature examples.The applicability of thick-walled and thin-walled theories was investigated using finite element method(FEM)calculation and axial fluid pressure wave speed analysis.The effects of flow velocity and internal static pressure on vibration and noise transmission of straight pipes and assembled pipes were discussed.Results show that the thick-walled theory is more accurate for calculating the vibration response of pipes with a thickness-to-radius ratio greater than 0.5;the axial fluid pressure wave speed is mainly affected by pipe material,sectional thickness-to-radius ratio,and length-to-diameter ratio;internal pressure mainly influences transverse vibration,especially lower-order frequencies,and enhances vibration transmission.关键词
充液加压管道/流固耦合/厚壁理论/振动特性Key words
pressurized fluid-filled pipe/fluid-structure interaction/thick-walled theory/vibration characteristic分类
交通工程引用本文复制引用
朱竑祯,吴江海,孙玉东..厚壁充液加压管道流固耦合振动特性分析[J].水下无人系统学报,2026,34(2):236-245,10.基金项目
江苏省高等学校基础科学面上项目资助(24KJB13006) （24KJB13006）
国家自然科学基金资助项目(12374447,12572025) （12374447,12572025）
无锡市青年科技人才托举行动(TJXD-2025-209) （TJXD-2025-209）
无锡市软科学研究课题(KX-25-A26). （KX-25-A26）
