轴扭耦合作用下膜盘联轴器扭转刚度特性研究  

Research on the torsional stiffness characteristics of diaphragm couplings under the coupling of axial force and torque

作　　者：王国平 王凯 刘吉轩 樊琛[1,2,3] 贾谦[1,2,3] 张琛 闫菲菲 WANG Guoping;WANG Kai;LIU Jixuan;FAN Chen;JIA Qian;ZHANG Chen;YAN Feifei(School of Mechanical Engineering,Xi’an Jiaotong University City College,Xi’an 710018,China;Engineering Research Center of Robot and Intelligent Manufacturing,Universities of Shaanxi Province,Xi’an 710018,China;The Tongue Muscle Rehabilitation Intelligent Robot System Youth Innovation Team of Shaanxi Universities,Xi’an 710018,China;School of Mechanical Engineering,Xi’an Jiaotong University,Xi’an 710049,China)

机构地区：[1]西安交通大学城市学院机械工程学院,西安710018 [2]机器人与智能制造陕西省高校工程研究中心,西安710018 [3]舌肌康复智能机器人系统陕西高校青年创新团队,西安710018 [4]西安交通大学机械工程学院,西安710049

出　　处：《现代制造工程》2024年第7期95-99,108,共6页Modern Manufacturing Engineering

基　　金：国家重大科研仪器研制项目(22127803);机器人与智能制造陕西省高校工程研究中心项目(2022GZ01);西安交通大学城市学院校级潜力培育项目(2023PY03)。

摘　　要：微型燃机轴系在实际工况下,往往因多种因素影响而受到耦合载荷的作用。膜盘联轴器作为燃气轮机上连接双跨转子的关键柔性零件,其耦合刚度成为影响系统静、动态性能的重要参数。当前,膜盘联轴器单载刚度研究较多,耦合刚度特性不明,不利于其设计技术及轴系稳定性的提升。基于这一问题,通过简化膜盘联轴器求解模型,以仿真分析对该型膜盘联轴器在轴向载荷和扭转载荷共同作用下联轴器整体的扭转刚度特性进行研究,并对比了纯扭转条件下扭转刚度特性,结果表明在轴扭耦合作用下,膜盘联轴器扭转刚度整体表现出非线性特性;在扭转载荷与轴向载荷之比小于0.25时,轴扭耦合效应明显,膜盘联轴器扭转刚度下降;在扭转载荷与轴向载荷之比大于等于0.25时,耦合效应可忽略不计,可视作纯扭转状态。这一特性为进一步深入研究膜盘联轴器对轴系动态性能的影响关系及其优化设计奠定了基础。Under actual working conditions,the shaft system of micro gas turbines is often affected by coupling loads due to various factors.The closed interference connected diaphragm coupling is a key flexible component for connecting double span rotors on gas turbines,and its coupling stiffness has become an important parameter affecting the static and dynamic performance of the system.Currently,there are many studies on the single load stiffness of diaphragm couplings,and the coupling stiffness characteristics are unclear,which is not conducive to the improvement of their design technology and shaft system stability.Based on this problem,by simplifying the solution model of the diaphragm coupling,the overall torsional stiffness characteristics of the coupling under the combined action of axial and torsional loads were studied through simulation analysis,and comparing the torsional stiffness characteristics under single torsional load.The results showed that under the action of axial torsional coupling,the overall torsional stiffness of the diaphragm coupling exhibits nonlinear characteristics.When the ratio of torsional load to axial load is less than 0.25,the axial torsional coupling effect is obvious,and the torsional stiffness of the diaphragm coupling decreases.When the ratio of torsional load to axial load is greater than or egual to 0.25,the coupling effect can be ignored and can be considered as a pure torsional state.The characteristic lays the foundation for further in-depth research on the influence of diaphragm coupling on the dynamic performance of the shaft system and its optimization design.

关 键 词：扭转刚度 轴扭载荷耦合 燃气轮机 耦合刚度 

分 类 号：TH132[机械工程—机械制造及自动化]