叠片联轴器在不同载荷形式作用下的非线性特性研究

Research on Nonlinear Characteristic of Laminated Coupling Under Different Load Forms

为了研究螺栓法兰连接式叠片联轴器在拉伸、弯曲和扭转3种不同载荷形式作用下的非线性变形行为,建立了联轴器局部有限元模型,分析了螺栓预紧力、界面摩擦因数对叠片变形和螺栓法兰连接刚度的影响,讨论了径向、周向滑移量和联轴器非线性变形之间的关系。结果表明,减小预紧力和摩擦因数可以有效降低联轴器的横向和扭转刚度,但对弯曲刚度影响有限;摩擦因数和螺栓预紧力对扭转刚度具有相似的影响机理。研究成果可为叠片式联轴器的设计提供有益的参考。

In order to study the nonlinear deformation behavior of bolt-flange-joined laminated coupling under three different load forms of tension,bending and torsion load,a local finite element model of the coupling is established.The effects of bolt preload and interfacial friction coefficient on the deformation of the laminated coupling and the stiffness of the bolt flange connection are analyzed.The relationship between the radial or cir cumferential slip and the nonlinear deformation of the coupling is discussed.The results show that reducing the preload and friction coefficient can effectively reduce the lateral and torsional stiffness of the laminated cou pling,but the influence on the bending stiffness is limited.The friction coefficient and the bolt preload have a similar influence mechanism on the torsional stiffness.Research results can provide a useful reference for the de sign of laminated coupling.