摘要
液化天然气双燃料推进船舶运行期间频繁的油-气转换会导致轴系激励变化,且机-电切换前后极易诱发轴系最大应力突变。论文以某型LNG双燃料动力船舶为对象开展不同工作模式下的推进轴系扭振特性分析,建立不同动力模式和电机模式下推进轴系扭振的动力学模型,分析稳态下全转速周期内各模式工作期间的轴系扭振特性,并进行扭振安全性评估,通过修改轴段长度和惯量提出优化方案,可为工程应用提供指导。
Frequent fuel switching between oil and gas in liquefied natural gas(LNG)dual-fuel carriers alters shaft system excitation forces,causing abrupt variations in maximum shaft stress during electro-mechanical system transitions across multiple operating modes.This study investigates a representative LNG carrier by establishing a mechanical model to evaluate torsional vibration characteristics under different operational conditions.A safety assessment of torsional vibrations is conducted,followed by an optimization strategy involving adjustments to shaft segment length and inertia.The proposed methodology offers practical guidance for engineering applications.
作者
王宇杭
倪世威
李磊
张亮
江锋
姜晨醒
WANG Yuhang;NI Shiwei;LI Lei;ZHANG Liang;JIANG Feng;JIANG Chenxing(School of Energy,Xiamen University,Xiamen 361102,China;Tan Kah Kee Innovation Laboratory,Xiamen 361102,China;School of Marine Engineering,Jimei University,Xiamen 361021,China;China Merchants Marine Equipment Research Institute Co.,Shenzhen 518066,China;China Merchants Jinling Shipbuilding(Nanjing)Co.,Nanjing 210015,China)
出处
《中国造船》
北大核心
2025年第3期145-157,共13页
Shipbuilding of China
关键词
推进轴系
扭转振动
工作模式
安全性评估
影响性分析
双燃料动力船舶
液化天然气船
propulsion shaft system
torsional vibration
operating modes
safety assessment
impact analysis
dual-fuel-powered ship
liquefied natural gas carriers
