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弹性机构铰接副处过大间隙的存在将严重地影响了机器的动态性能。正因如此 ,采用间隙机构中常用的牛顿二阶段运动模型 ,引入两套广义坐标 ,对含间隙弹性平面连杆机构的副间分离与碰撞过程建立比较简洁易懂且全面反映间隙铰动态特性的动力学模型 ,计入了刚弹耦合作用及间隙对杆件弹性变形的影响 ,并考虑曲柄非匀速运转情况 ,利用该模型 ,引入挤压油膜阻尼器被动控制技术 ,通过算例 ,对比分析了理想铰、间隙铰、挤压油膜铰对弹性机构的动态特性的影响。分析结果表明 ,挤压油膜阻尼器被动控制间隙机构是可行的。因此 ,为含间隙机构未来领域的研究提供了一个新思路。
The presence of excessive clearances at the hinges of the elastic mechanism will seriously affect the dynamic performance of the machine. Because of this, the Newton two-stage motion model commonly used in the clearance mechanism is introduced and two sets of generalized coordinates are introduced to establish a relatively simple and easy to understand and comprehensively reflect the dynamic behavior of the clearance hinge The dynamic model includes the influence of the just-elastic coupling and the gap on the elastic deformation of the bar. Considering the non-uniform operation of the crank, the passive damping technology of the squeeze film damper is introduced by using this model. By comparing with the examples Effect of Ideal Hinge, Clearance Hinge and Squeeze Film Hinge on the Dynamic Characteristics of Elastic Mechanism. The analysis results show that the squeeze film damper passive control gap mechanism is feasible. Therefore, it provides a new idea for the future research of gap-containing mechanism.