考虑不同跨度的膜盘联轴器动力学特性分析  

Analysis of Dynamic Characteristics of Membrane Disc Couplings with Different Spans

作　　者：许刘爽 于印鑫 袁琦[1] XU Liushuang;YU Yinxing;YUAN Qi(School of Mechanical and Electrical Engineering,Kunming University of Science and Technology,Kunming 650500,China;Yunnan Key Laboratory of Intelligent Manufacturing Technology for Advanced Equipment,Kunming University of Science and Technology,Kunming 650500,China)

机构地区：[1]昆明理工大学机电工程学院,昆明650500 [2]昆明理工大学云南省先进装备智能制造技术重点实验室,昆明650500

出　　处：《噪声与振动控制》2024年第5期33-38,共6页Noise and Vibration Control

基　　金：国家自然科学基金资助项目(52165014)。

摘　　要：随着联轴器跨度增大,利用集中质量模型研究其动力学特性必然导致较大的模型误差,为了准确地研究跨度对膜盘联轴器动力学特性的影响,建立膜盘联轴器连续体动力学模型。利用逆解法得到前三阶固有频率;通过模态叠加法对膜盘联轴器轴向和横向振动响应进行求解,分析不平衡载荷相位差和中间轴跨度对其动力学特性的影响规律,并与有限元法和文献中的结果进行对比验证。研究结果表明:联轴器各阶固有频率随中间轴跨度增大而减小,同时会在特定转速下导致联轴器整体振动响应幅值增大;两法兰盘不平衡载荷相位差逐渐增大时,联轴器振动响应以第二阶振型为主,随相位差增大,振动响应幅值逐渐向第三阶振型转变,同时整体振动幅值明显降低,最大振幅位置由跨中向两侧转移。研究结论对不同跨度联轴器的设计和使用具有一定的理论和工程意义。With the increase of the span of the coupling,the study of its dynamic characteristics by using the concen-trated mass model will lead to large model errors.In order to accurately study the influence of the span on the dynamic char-acteristics of the membrane disk coupling,a continuous dynamic model of the membrane disk coupling was established.The natural frequencies of the first three orders were obtained by inverse solution method.The mode superposition method was used to solve the axial and transverse vibration responses of the membrane disc coupling,and the influence of unbalanced load phase difference and intermediate shaft span on its dynamic characteristics was analyzed,which was verified by com-parison with the finite element method and literature.The results show that the natural frequency of each order of the cou-pling decreases with the increase of the span of the intermediate shaft,and the overall vibration response amplitude of the coupling increases at a specific speed.When the phase difference of unbalanced load of two flanges gradually increases,the vibration response of the coupling is dominated by the second mode.With the increase of the phase difference,the vibration response amplitude gradually changes to the third mode.At the same time,the overall vibration amplitude decreases signifi-cantly,and the maximum amplitude is transferred from mid-span to both sides.The research has certain theoretical and engi-neering significance for the design and use of couplings with different spans.

关 键 词：振动与波 动力学 膜盘联轴器 连续体建模 跨度 相位差 

分 类 号：TH113.1[机械工程—机械设计及理论]