摘要
船舶轴系的抗碰撞能力直接影响着其动力传递的稳定性,船舶的大尺度效应对碰撞载荷作用强度的影响也不容忽视。为此,建立基于艉轴—油膜—艉部结构系统的力学模型,研究艉轴在碰撞载荷作用下的平均冲击力、冲击振幅、轴心轨迹等参数的变化规律,分析由碰撞载荷和转速确定的轴系安全运行区域。结果表明:在不同转速区域,碰撞载荷的作用强度随载荷大小而变化的规律不同;在作用强度值一定的条件下,转速和载荷可拟合成相关曲线图谱,可以此对轴系承受碰撞载荷的能力进行快速评估。
The anti-impact ability of shafting directly affects the stability and security of a ship＇s power transmission, and it cannot be ignored that large-scale effects on ships have an influence on the interaction intensity of the impact load. Based on the marine shafting-oil film-stern structure system, the average im- pact load, impact amplitude and orbit of the axle center are analyzed, and the range of shafting speed and load for safe running is determined. The results show that the law of interaction intensity changing with the load is different at different rotation speeds. The interaction intensity of shafting with loads depends on the stern shaft speed and impact intensity, and can be approximated as a function for assessing load carrying capacity.
出处
《中国舰船研究》
CSCD
北大核心
2017年第1期122-127,共6页
Chinese Journal of Ship Research
基金
浙江省自然科学基金资助项目(LY16E090003)
关键词
碰撞载荷
艉部结构
轴系振动
承载力
impact load
stern structure
shaft vibration
load-bearing capacity
