以推力轴承集成减振系统为背景，研究轴系边界条件改变后，集成减振系统与轴系的耦合振动，详细推导集成减振系统纵向、回旋传递矩阵解析表达式，建立了推进轴系与集成减振系统Xoz平面内的三自由度耦合模型，结合试验室搭建的集成减振系统平台参数，重点分析推力轴承非刚性支承后，轴系纵向回旋耦合振动原因是减振系统刚度矩阵的不对称导致的；以纵向力传递率作为评估指标，指出耦合振动频率一定程度上缩小了减振系统的减振频带。
Based on Integrated Vibration Isolator (IVI) of marine's thrust bearing, it has focus on the coupling vibration between IVI and thrust bearing when the boundary of marine shafting has changed. In the paper, the analytic expressions of longitudinal and whirling transfer matrix of IVI have been derived in detail, and the three dof's coupling vibration model in Xoz plane of IVI and thrust bearing has also been established. Then combined with the parameters of IVI built in author's laboratory, it put emphases on longitudinal and whirling coupling vibration of marine shafting with elastic support of thrust bearing which is caused by the asymmetry of IVI's stiffness matrix. Furthermore, the coupling vibration mentioned above partly decreases the damping band of IVI with the force transmissibility as the evaluating indicator.
2018,40(6): 51-56 收稿日期：2017-04-21
DOI：10.3404/j.issn.1672-7649.2018.06.011
分类号：U664.3
作者简介：何江洋(1987-),男,博士研究生,研究方向为船舶动力机械振动与噪声控制
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