低速柴油机推进轴系频域稳态扭转振动分析  

Analysis of Torsional Vibration in Frequency Domain Steady State of Propulsion Shafting of Low-Speed Diesel Engine

作　　者：邹磊 肖能齐 郭岚峰 逄显娟[4] 张云程 王宏伟 ZOU Lei;XIAO Nengqi;GUO Lanfeng;PANG Xianjuan;ZHANG Yuncheng;WANG Hongwei(Hubei Sinophorus Electronic Materials Co.,Ltd.,Yichang 443007,Hubei,China;College of Mechanical&Power Engineering,China Three Gorges University,Yichang 443002,Hubei,China;Hubei Key Laboratory of Hydroelectric Machinery Design&Maintenance,China Three Gorges University,Yichang 443002,Hubei,China;National United Engineering Laboratory for Advanced Bearing Tribology,Henan University of Science and Technology,Luoyang 471023,Henan,China)

机构地区：[1]湖北兴福电子材料股份有限公司,湖北宜昌443007 [2]三峡大学机械与动力学院,湖北宜昌443002 [3]三峡大学水电机械设备设计与维护湖北省重点实验室,湖北宜昌443002 [4]河南科技大学高端轴承摩擦学技术与应用国家地方联合工程实验室,河南洛阳471023

出　　处：《造船技术》2023年第4期33-38,共6页

基　　金：高端轴承摩擦学技术与应用国家地方联合工程实验室开放基金项目(编号:202209);宜昌市自然科学研究基金项目(编号:A213008);水电机械设备设计与维护湖北省重点实验室基金项目(编号:2022KJX07)。

摘　　要：以载重10000 t低速柴油机推进轴系为研究对象,创建其当量系统模型。基于系统矩阵法对推进轴系进行自由振动分析,求得扭转振动固有频率和振型。研究柴油机在全转速下的气体和往复惯性激励力矩,针对推进轴系在柴油机和螺旋桨共同激励下的频域稳态扭转振动响应特性进行计算,求得推进轴系扭转振动的主谐次、共振转速点和推进轴系各部件的应力值。结果表明,推进轴系在低阶频率振动时气缸和中间轴振幅较大,推进轴系应力远小于材料的屈服强度,船舶能够安全稳定航行,同时为推进轴系时域瞬态扭转振动研究打下基础。The propulsion shafting of 10000 t low-speed diesel engine is taken as the research object to establish its equivalent system model.Based on the system matrix method,the free vibration of propulsion shafting is analyzed,and the natural frequency and vibration mode of torsional vibration are obtained.The gas excitation torque and reciprocating inertia excitation torque of diesel engine at full speed are studied,the response characteristics of torsional vibration in frequency domain steady state of propulsion shafting under the combined excitation of diesel engine and propeller are calculated,and the principle harmonic order and resonance speed point of torsional vibration of propulsion shafting and the stress values of each component of propulsion shafting are obtained.The results show that the vibration amplitude of cylinder and intermediate shaft is larger and the stress of propulsion shafting is much smaller than the yield strength of the material when the propulsion shafting vibrates at low order frequency,so the ship can sail safely and stably.The results also lay a foundation for the research of torsional vibration in time domain transient state of propulsion shafting.

关 键 词：低速柴油机 推进轴系 频域稳态 扭转振动 强迫振动 

分 类 号：U661.44[交通运输工程—船舶及航道工程]