Investigation on nonlinear dynamics and fatigue damage of a simply supported tube with clearance restriction in tube bundles subjected to two-phase flow

IF 1.9 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Nuclear Engineering and Design Pub Date : 2024-10-24 DOI:10.1016/j.nucengdes.2024.113644

Shihao Yang , Jiang Lai

引用次数: 0

Abstract

In this study, a mathematical model was developed to analyze the vibration of a simply supported tube with clearance restriction in an otherwise rigid rotated triangular tube array subjected to two-phase flow. The study evaluated the fatigue damage and collision behavior of the tube bundles system. The numerical results showed that the reduced velocity significantly affects the dominant frequency, collision frequency, and stable equilibrium position of the system. This suggests that the nonlinear dynamic characteristics of the simply supported tube with clearance restriction play a crucial role in determining fatigue damage.

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受两相流作用的管束中带有间隙限制的简支管的非线性动力学和疲劳损伤研究

本研究建立了一个数学模型，用于分析在受到两相流作用的刚性旋转三角管阵列中带有间隙限制的简支撑管的振动。研究评估了管束系统的疲劳损伤和碰撞行为。数值结果表明，速度降低会显著影响系统的主频、碰撞频率和稳定平衡位置。这表明，带有间隙限制的简支管的非线性动态特性在决定疲劳损伤方面起着至关重要的作用。

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

Nuclear Engineering and Design 工程技术-核科学技术

CiteScore

3.40

自引率

11.80%

发文量

377

审稿时长

5 months

期刊介绍： Nuclear Engineering and Design covers the wide range of disciplines involved in the engineering, design, safety and construction of nuclear fission reactors. The Editors welcome papers both on applied and innovative aspects and developments in nuclear science and technology. Fundamentals of Reactor Design include: • Thermal-Hydraulics and Core Physics • Safety Analysis, Risk Assessment (PSA) • Structural and Mechanical Engineering • Materials Science • Fuel Behavior and Design • Structural Plant Design • Engineering of Reactor Components • Experiments Aspects beyond fundamentals of Reactor Design covered: • Accident Mitigation Measures • Reactor Control Systems • Licensing Issues • Safeguard Engineering • Economy of Plants • Reprocessing / Waste Disposal • Applications of Nuclear Energy • Maintenance • Decommissioning Papers on new reactor ideas and developments (Generation IV reactors) such as inherently safe modular HTRs, High Performance LWRs/HWRs and LMFBs/GFR will be considered; Actinide Burners, Accelerator Driven Systems, Energy Amplifiers and other special designs of power and research reactors and their applications are also encouraged.