考虑时变啮合刚度的船用高速斜齿轮动力学特性分析

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英文篇名：Analysis of dynamic characteristics of high speed helical gear for ship considering time-varying meshing stiffness 作者：文建爽 ; 杜进辅 ; 刘凯 ; 王峥嵘 英文作者：WEN Jianshuang;DU Jinfu;LIU Kai;WANG Zhengrong;School of Mechanical and Precision Instrument Engineering, Xi'an University of Technology; 关键词：时变啮合刚度 ; 高速 ; 斜齿轮 ; 承载接触分析 ; 动力学 英文关键词：time-varying meshing stiffness;;high speed;;helical gear;;loaded tooth contact analysis;;dynamics 中文刊名：XALD 英文刊名：Journal of Xi'an University of Technology 机构：西安理工大学机械与精密仪器工程学院; 出版日期：2019-03-30 出版单位：西安理工大学学报 年：2019 期：v.35 基金：国家自然科学基金资助项目(51705419,61701397);; 陕西省自然科学基础研究计划资助项目(2017JQ5048) 语种：中文; 页：XALD201901014 页数：7 CN：01 ISSN：61-1294/N 分类号：84-89+130

摘要

为了研究时变啮合刚度对船用斜齿轮传动系统动力学特性的影响,以某船用高速斜齿轮副为研究对象,首先建立了考虑时变啮合刚度的斜齿轮弯-扭-轴耦合动力学模型,并采用改进的基于承载接触分析(Loaded Tooth Contact Analysis,LTCA)的时变啮合刚度计算方法,计算并拟合出时变啮合刚度曲线;然后分析了特定时变啮合刚度激励条件下转速升高对系统振动情况的影响,以及9 000 r/min和12 000 r/min时不同时变啮合刚度激励下的系统振动特性。分析结果表明,时变啮合刚度激励下,在非共振区转速变化对系统振动特性的影响不显著。齿轮副平均啮合刚度值增大会使振动幅值减小,但共振转速会发生改变,即系统固有频率会发生改变,另外时变啮合刚度波动幅值增大会使振动加剧但不改变系统固有频率。本文研究可为高速斜齿轮传动的设计和工程应用提供一定的参考依据。
        In order to study the effect of time-varying meshing stiffness on the dynamics characteristics of marine helical gear transmission system, a marine high-speed helical gear pair is taken as the research object. Firstly, the bending-torsion-shaft coupling dynamics model of helical gear is established, with the method based on the loaded tooth contact analysis(LTCA) is used to calculate and fit the time-varying meshing stiffness curve. Secondly, the influence of the rotation speed on the vibration of the system is analyzed under the condition of specific time-varying meshing stiffness excitation. And then, the vibration characteristics of the system is also analyzed under different time-varying meshing stiffnesses at 9 000 rpm and 12 000 rpm. The results show that the influence of the rotational speed variation in the non-resonant zone on the vibration characteristics of the system is insignificant under the condition of time-varying meshing stiffness. The increase of the mean meshing stiffness of gears will reduce the amplitude of vibration, but the resonance speed will change. That is, the natural frequency of the system will change. In addition, the increase of amplitude of time-varying meshing stiffness will aggravate vibration,and it will not change the natural frequency of the system. This study could provide a reference for the design and engineering application of high speed helical gear transmission.

引文

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