水润滑轴承衬套装配间隙对轴系振动的影响
Effect of water-lubricated bearing assembly clearance on shaft system vibration
杨俊 1周兆华 1郭旭 2欧阳武 3金勇 2黄健2
作者信息
- 1. 武汉第二船舶设计研究所,湖北武汉 430064
- 2. 武汉理工大学交通与物流工程学院,湖北武汉 430063
- 3. 水路交通控制全国重点实验室,湖北武汉 430063;武汉理工大学交通与物流工程学院,湖北武汉 430063
- 折叠
摘要
水润滑尾轴承通常安装在美人架和尾轴管中,轴承衬套的安装间隙大小直接影响到轴承刚度,从而对轴系振动产生影响,极大程度影响到舰船隐身性能.通过试验验证过盈配合和间隙配合2种安装结构的轴承在静载条件下的摩擦特性与振动特性.结果表明,2种安装间隙下的水润滑轴承的摩擦扭矩的变化趋势一致,均随载荷的增大而增大,随转速的升高而减小,间隙配合轴承的扭矩大于相同工况条件下过盈配合轴承的扭矩;在振动性能上,间隙配合轴承的振动幅值大于过盈配合的轴承,且相比于过盈配合轴承有更大机率出现高频特征频率.在相同工况条件下,过盈配合的轴承的摩擦特性和振动特性均优于间隙配合的轴承.
Abstract
The water-lubricated stem bearing is usually installed in the beauty rack and the stern shaft tube.The install-ation gap between bearing bushing and stem shaft tube directly affects the bearing stiffness,thus affecting the shafting vibra-tion and greatly affecting the stealth performance of the ship.The friction characteristics and vibration characteristics of the bearings with interference fit and clearance fit under static load conditions are verified by experiments.The results show that the friction torque of the bearings with two installation clearances increases with the increase of the load,decreases with the increase of the rotational speed.Under the same conditions,the friction torque of the bearing with clearance fit is greater than that of the bearing with interference fit.In terms of vibration characteristics,the vibration amplitude of the bearing with clearance fit is greater than that of the bearing with interference fit,and the probability of characteristic frequency at high fre-quency is greater.Under the condition of constant load,the friction characteristics and vibration characteristics of the bear-ing with interference fit are better than those of the bearing with clearance fit.
关键词
水润滑轴承/装配间隙/摩擦学性能/振动性能Key words
water-lubricated bearing/assembly clearance/tribological performance/vibration performance引用本文复制引用
基金项目
国家自然科学基金资助项目(52241102)
国家自然科学基金资助项目(52071244)
国家自然科学基金资助项目(5210370)
出版年
2024
NETL
NSTL
万方数据