Study on the dynamic behavior of herringbone gear structure of marine propulsion system powered by double-cylinder turbines
双缸涡轮动力船用推进系统人字齿轮结构动力学行为研究
二気筒タービンを動力源とする海上推進システムのヘリンボーン歯車構造の動的挙動に関する研究
이중 실린더 터빈에 의해 구동되는 선박 추진 시스템의 헤링본 기어 구조의 동적 거동에 관한 연구
Estudio sobre el comportamiento dinámico de la estructura de engranajes en espiga de un sistema de propulsión marino propulsado por turbinas de doble cilindro
Etude du comportement dynamique de la structure des engrenages à chevrons d'un système de propulsion marin propulsé par des turbines à double cylindre
Исследование динамического поведения "елочки" зубчатой передачи судовой двигательной установки с приводом от двухцилиндровых турбин
JiangHai XU 徐江海 ¹, ChunXiao JIAO 焦春晓 ¹, DongLin ZOU 邹冬林 ¹, Na TA 塔娜 ¹, ZhuShi RAO 饶柱石 ¹ ²
¹ State Key Laboratory of Mechanical System and Vibration, Institute of Vibration, Shock and Noise, Shanghai Jiao Tong University, Shanghai 200240, China
中国 上海 上海交通大学振动、冲击、噪声研究所 机械系统与振动国家重点实验室
² Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai 200240, China
中国 上海 高新船舶与深海开发装备协同创新中心
Science China Technological Sciences, 24 December 2021
Abstract
Propulsion systems powered by double-cylinder turbines (DCT) are widely used in large-scale ships. However, the nonlinear instability leads to hidden dangers associated with the safe operation, and there is a lack of theoretical and systematic research on this problem. Based on the gear transmission principle and non-Newtonian thermal elastohydrodynamic lubrication (EHL) theory, a torsional model of a two-stage herringbone system forced by unsymmetrical load is established.
The nonlinear and time-varying factors of meshing friction, meshing stiffness, and gear pair backlash are included in the model, and multiple meshing states, including single- and double-sided impact are studied. New nonlinear phenomena of the dynamic system are explored and the effects of the unsymmetrical load on the system stability are quantified.
The results indicate that the stability of the gear system is improved, and that the back-sided impact gradually disappears with the increases of load ratio between the two inputs and the input load value. Furthermore, it is found that the gear pairs on the low-load side experience more severe vibration than those on the high-load side. Finally, the stability of the gear pairs decreases along the power transmission path of the multi-stage gear system. The results of this research will be useful when making predictions of the stability of such systems and in the optimization of the load parameters.
