基于准零刚度隔振器的船舶推进轴系纵向减振研究  

Longitudinal vibration reduction of ship propulsion shafting based on quasi-zero-stiffness isolator

作　　者：赵含 杨志荣[2] 塔娜[1] 饶柱石[1] ZHAO Han;YANG Zhirong;TA Na;RAO Zhushi(Stale Key Lab of Mechanical System and Vibration,School of Mechanical Engineering,Shanghai Jiaotong University,Shanghai 200240,China;Fujian Provincial Key Lab of Naval Architecture&Ocean Engineering,College of Marine Engineering,Jimei University,Xiamen 361021,China)

机构地区：[1]上海交通大学机械系统与振动国家重点实验室,上海200240 [2]集美大学轮机工程学院福建省船船与海洋工程重点实验室,福建厦门361021

出　　处：《振动与冲击》2020年第23期90-95,共6页Journal of Vibration and Shock

基　　金：机械系统与振动国家重点实验室开放课题资助项目(MSV201901)。

摘　　要：通过对准零刚度隔振器的静力学特性研究,比较分析了两种模型的结构参数对低动刚度位移范围的影响。利用有限元法,将隔振器的回复力作为一端边界条件,建立了基于准零刚度隔振器的推进轴系纵振动力学模型,应用谐波平衡法求解出系统的力传递率。结合船舶模拟工况参数,对比研究了基于不同隔振器模型的推进轴系,在叶频激励下的隔振效果。分析结果表明,准零刚度隔振器可以在等效线性系统的基础上实现推进轴系的纵向叶频隔振,选择适当的准零刚度隔振器模型和阻尼,可以避免主共振出现跳跃现象并保持低频隔振效果。Based on static characteristics study of two quasi-zero-stiffness(QZS)isolators,effects of the two isolator models’structural parameters on displacement range of low dynamic stiffness were contrastively analyzed.The dynamic model for longitudinal vibration of ship propulsion shafting based on QSZ isolator with its restoring force taken as one end’s boundary condition was established using the finite element(FE)method.The force transmissibility of the system was solved with the harmonic balance method.Combined with simulated ship working condition parameters,vibration isolation effects under excitation of blade frequency for ship propulsion shafting based on different isolator models were contrastively studied.Analysis results showed that the QZS isolator can realize longitudinal vibration reduction of ship propulsion shafting under excitation of blade frequency based on an equivalent linear system;choosing a suitable QZS isolator model and damping can avoid jump phenomenon occurring during main resonance and keep low frequency vibration isolation effect.

关 键 词：准零刚度 推进轴系纵振 低频隔振 有限元分析 

分 类 号：TH212[机械工程—机械制造及自动化] TH213.3