A failure analysis of the cylinder and connection bolts in a buoyancy regulator of an underwater glider

被引：7
|
作者：
Yang, Chiye [1 ,2 ]
Guo, Liming [1 ,2 ]
Liu, Jing [1 ,2 ]
Pan, Guang [1 ,2 ]
机构：
[1] Northwestern Polytech Univ, Sch Marine Sci & Technol, Xian 710072, Peoples R China
[2] Northwestern Polytech Univ, Lab Unmanned Underwater Vehicle, Xian 710072, Peoples R China
来源：
ENGINEERING FAILURE ANALYSIS | 2023年 / 149卷
基金：
中国国家自然科学基金;
关键词：
Underwater glider; Buoyancy regulator; Failure analysis; Cylinder; Connection bolts; SEALING PERFORMANCE;
D O I：
10.1016/j.engfailanal.2023.107231
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The buoyancy regulator is key device used in underwater gliders for adjusting their buoyancy. This paper studies the failures of the cylinder and the connection bolts during the working processing of the buoyancy by using a finite element method. The effect of the ovality on the sealing and the scratching failures of the cylinder is analyzed. Note that the poor machining accuracy should produce the cylinder sealing and the scratching failures. Some suggestions for improving the ideal cylinder design are introduced. Additionally, the specific reasons of the failures of the connecting bolts for the buoyancy regulator are also investigated. Note that the overload causes the failures of the connection bolts. The loading capacity can be increased by making the connecting flange stiffer or by utilizing the larger bolts. The optimization design methods for the piston and the piston rod are provided according to the simulation results. This paper can provide a failure analysis and structural optimization method for the buoyancy regulators.
引用
收藏
页数：13
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