The torsional stiffness model of the coupling, considering the influence of excess, is established, and the influence of structure-excess parameters on the vibration stability of the coupling is studied. Firstly, the torsional stiffness model of the coupling considering the influence of excess is constructed by using finite element and response surface theory, and it is verified that the model can make up for the shortcoming of losing high-frequency vibration information. Secondly, the sensitivity of the coupling torsional stiffness eigenvalues to the structure-excess parameter is explored using the Sobol’ method. Thirdly, the effects of structure-excess parameters on the vibration stability of the coupling were observed using bifurcation diagrams. By comparing the vibration characteristics of the coupling under different amounts of excess, it is found that the vibration state of the coupling tends to be chaotic, accompanied by unstable phenomena such as resonance, and the increase in excess helps to control the torsional angle of the coupling. At the same time, in the low excess state, the middle shaft thickness changes so that the coupling resonance region shows a concentration of characteristics, and the sensitivity of the vibration state of the coupling to the change of the inclination angle in the middle taper area is neglected. In the high excess condition, the change of the middle shaft thickness will lead to scattered degradation in the resonance region of the coupling, and the change of the inclination angle will lead to intermittent chaotic vibration of the coupling, causing unstable vibration of the coupling. The research results of this paper can not only make up for the loss of high-frequency vibration information of the coupling, but also control the vibration amplitude and vibration state of the coupling, so as to reduce the probability of damage to the coupling laminations.

中文翻译：

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考虑过剩效应的叠片联轴器扭转刚度及振动响应规律研究


建立了考虑超量影响的联轴器扭转刚度模型，研究了结构超量参数对联轴器振动稳定性的影响。首先，利用有限元和响应面理论构建了考虑过量影响的联轴器扭转刚度模型，并验证了该模型能够弥补高频振动信息丢失的缺点。其次，使用 Sobol 方法探讨了耦合扭转刚度特征值对结构过剩参数的敏感性。第三，利用分岔图观察了结构过剩参数对联轴器振动稳定性的影响。通过对比不同超量下联轴器的振动特性发现，联轴器的振动状态趋于混沌，并伴有共振等不稳定现象，而超量的增加有助于控制联轴器的扭转角度。耦合。同时，在低过剩状态下，中间轴厚度发生变化，使联轴器共振区表现出集中特性，联轴器振动状态对中间锥区倾斜角变化的敏感性被忽视了。在高过剩工况下，中轴厚度的变化会导致联轴器共振区的分散退化，倾角的变化会导致联轴器出现间歇性混沌振动，造成联轴器的不稳定振动。 本文的研究成果不仅可以弥补联轴器高频振动信息的损失，而且可以控制联轴器的振幅和振动状态，从而降低联轴器叠片损坏的概率。