n型结构膜盘联轴器型面设计与有限元分析

Molding surface design and finite element analysis of n-shape membranous discs structure on diaphragmcoupling

针对膜盘联轴器型面设计和型面在不同类型载荷下的应力分布等问题,将有限元分析技术应用到膜盘联轴器设计中。提出了一种以n型结构连接的双膜盘结构膜盘联轴器。根据等强度近似理论设计了膜盘型面,分别建立了分析膜盘联轴器应力的轴对称和循环对称两种简化有限元模型,给出了作用在该二者模型上的边界条件和初始条件,并采用ANSYS有限元分析软件对两种模型进行了分析,得出了膜盘型面的轴向刚度特性和其在不同工况下的应力计算结果,并分析了扭矩、离心力和不对中载荷对其的不同影响。研究结果表明,在大扭矩、高速、小轴向偏转和小角向偏转的场合,n型结构连接的双膜盘联轴器型面采用双曲线设计是一种理想的方式。

Aiming at the problems of surface design of diaphragm coupling and its stress distribution under different types of loads,finite element analysis technique was applied to the design of diaphragm coupling,the n-shape double membrane disc structure was investigated. The surface was designed according to equal strength approximation theory,two simplified finite element model of axial symmetry and cyclic symmetry was built for stress analysis of diaphragm coupling. Based on given boundary conditions and initial conditions,the axial stiffness characteristic and its stress under different conditions were established. The different influence of torque,centrifugal force and misalignment load were calculated. The experimental results show that on the occasion of large torque,high speed,small axial deflection and small angle deflection,the hyperbolic design of n-shape double membrane disc structure is an ideal way.