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

被引：0
|
作者：
Yang, Shihao [2 ,3 ,4 ]
Lai, Jiang [1 ]
机构：
[1] Univ Elect Sci & Technol China, Sch Aeronaut & Astronaut, Chengdu 611731, Peoples R China
[2] Xihua Univ, Key Lab Fluid & Power Machinery, Minist Educ, Chengdu 610039, Sichuan, Peoples R China
[3] Xihua Univ, Key Lab Fluid Machinery & Engn, Chengdu 610039, Sichuan, Peoples R China
[4] Xihua Univ, Sch Energy & Power Engn, Chengdu 610039, Peoples R China
来源：
NUCLEAR ENGINEERING AND DESIGN | 2024年 / 429卷
关键词：
Nonlinear dynamics; Fatigue damage; Two-phase flow; Tube bundles system; FLUIDELASTIC INSTABILITY; FORCES;
D O I：
10.1016/j.nucengdes.2024.113644
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
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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页数：17
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