考虑斜置弹簧阻尼的船舶轴系纵振高静低动隔振器的建模研究  

Modeling research of the longitudinal vibration reduction of ship shafting with high-static-low-dynamic stiffness vibration isolator considering oblique spring damper

作　　者：杨志荣[1,2] 李林桃 赵含 饶柱石 YANG Zhi-rong;LI Lin-tao;ZHAO Han;RAO Zhu-shi(Marine Engineering Institute,Jimei University,Xiamen 361021,China;Xiamen Key Laboratory of Marine Corrosion and Smart Protective Materials,Xiamen 361021,China;State Key Laboratory of Mechanical System and Vibration,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]集美大学轮机工程学院,福建厦门361021 [2]厦门市海洋腐蚀与智能防护材料重点实验室,福建厦门361021 [3]上海交通大学机械系统与振动国家重点实验室,上海200240

出　　处：《船舶力学》2022年第8期1218-1226,共9页Journal of Ship Mechanics

基　　金：福建省科技计划引导性项目(2020H0019);厦门市海洋腐蚀与智能防护材料重点实验室开放基金;集美大学国家基金培育计划项目。

摘　　要：本文首先分析带连杆-弹簧并联结构的高静低动隔振器的静力学模型,得出高静低动隔振器的一阶刚度和三阶刚度表达式;其次,考虑斜置弹簧阻尼情况,利用有限元法建立起推进轴系-高静低动隔振器纵振隔振系统的动力学模型,运用谐波平衡法求解出系统的力传递率,并与采用龙格库塔法的数值解法进行对比验证;最后,结合船舶实际工况参数,分析其在叶频激励下隔振系统的隔振效果。分析结果表明,考虑斜置弹簧阻尼的高静低动隔振器隔振系统的低频隔振效果更好,随着高静低动隔振器的轴向阻尼增大,隔振系统在高频段的隔振效果变差。The statics model of high-static-low-dynamic stiffness(HSLDs)vibration isolator with connecting rod and three spring parallel structure was first analyzed in this paper,and the expression of the first and third order stiffness of the HSLDs vibration isolator was given.Then,the dynamic model for ship shafting with HSLDs vibration isolator considering oblique spring damper was established using FEM,and the force trans⁃missibility of the system obtained by the incremental harmonic balance(IHB)method was compared with that of the numerical method of Runge Kutta.Finally,the vibration isolation effect of the system under excitation of blade frequency was analyzed considering the working condition parameters of the ship.The analytical re⁃sults show that the ship shafting with HSLDs vibration isolator considering oblique spring damper has a bet⁃ter vibration reduction in low frequency,however,the vibration reduction becomes worse in high frequency band with the axial damper ratio increasing.

关 键 词：高静低动 推进轴系纵振 低频隔振 有限元分析 

分 类 号：U661.43[交通运输工程—船舶及航道工程]