舰用柴油机隔振系统建模及隔振效果评价  

Modeling and Evaluation of Vibration Isolation System of Ship Diesel Engine

作　　者：贾睿昊 牛军川[1,3] 郭俊财 Jia Ruihao;Niu Junchuan;Guo Juncai(School of Mechanical Engineering,Shandong University,Jinan 250061,China;Jinan Guoke Medical Engineering Technology Development Company Limited,Jinan 250102,China;Key Laboratory of High Efficiency and Clean Mechanical Manufacture,Shandong University,Jinan 250061,China)

机构地区：[1]山东大学机械工程学院,山东济南250061 [2]山东国科医工科技发展有限公司,山东济南250102 [3]山东大学高效洁净机械制造教育部重点实验室,山东济南250061

出　　处：《内燃机学报》2023年第4期376-383,共8页Transactions of Csice

基　　金：国家自然科学基金资助项目(51675306,52075294).

摘　　要：为了对舰艇内的内燃机进行减振,将内燃机及其配套设备安装于多层隔振系统,采用活动标架法(MFM)对多层隔振系统进行动力学建模及计算,易于描述基础的多样运动方式,简化了动力学方程的复杂性.针对多支撑的复杂隔振系统,定义了基于传递力的振级落差指标,用于理论计算和设计阶段隔振系统的性能评估.研究了不同形式的船体运动对隔振系统性能的影响,结果表明:船体的运动状态会显著影响隔振系统的隔振性能,随着船体运动幅值或频率增大,隔振系统的隔振效果变差,船体横摇或纵摇对隔振性能的影响比垂荡更为复杂.In order to reduce the vibration of the internal combustion engine in ships,the internal combustion engine and its auxiliary equipment are installed in multi-stage vibration isolation system.The modeling of the multistage vibration isolation system is carried out by moving frame method(MFM),which is adapt to describe the various motions of the vibration foundation and simplify the complexity of the dynamic equation.Aiming at the complex vibration isolation system with multiple supports,the force level difference is defined based on the transfer force,which is used for evaluating the isolation performance of the vibration isolation system in the theoretical calculation and designing.The influences of ship motions on the performance of vibration isolation system are studied.The results show that the isolation performance of the vibration isolation system is significantly affected by the mo-tion state of the ship.With the increasing of the amplitude or frequency of the ship vibration motion,the vibration isolation efficiency of the vibration isolation system will become worse.The influence of ship rolling or pitching on the vibration isolation performance is more complex than that of heaving.

关 键 词：柴油机 多层隔振系统 活动标架法 振级落差 

分 类 号：TK402[动力工程及工程热物理—动力机械及工程]