弹性波纹环减振轴承设计与分析

设计了一种圆周周向呈现正弦波纹状的弹性圆环轴承阻尼器，与滚动轴承耦合到一起，实现轴承减振吸能功能。建立了弹性波纹环减振轴承的力学模型，利用有限元方法对该减振轴承进行力学性能分析，研究了弹性波纹环几何参数对其应力分布和径向压缩刚度的影响以及弹性波纹环的减振吸能效果。结果表明：与弹性凸台环比较，弹性波纹环的应力分布有了很大改善，在给定工况下，最大Mises应力从1 356 MPa降低到464 MPa，应力减小了64%，消除了应力集中现象；弹性波纹环的厚度、波纹周期数和弹性环直径对弹性环的应力和刚度影响显著。弹性波纹环的引入大幅度降低了轴承在振动冲击时受到的冲击力。

Design and analysis of damping bearing with elastic waved ring

An elastic ring bearing damper with sinusoidal corrugated shape was designed, and also coupled with rolling bearing to realize the function of vibration absorption and energy absorption. The mechanical model of elastic waved ring damping bearing was established, and damping bearing was analyzed by finite element method. Influences of geometric parameters of elastic waved ring on the stress distribution, radial compression stiffness, vibration reduction, and energy absorption were studied. Results indicated that stress distribution of elastic waved ring was greatly improved compared with the stepped elastic convex ring. In a given working condition, the maximum Mises stress was decreased by 64% from 1 356 MPa to 464 MP as stress concentration phenomenon was eliminated. Thickness of elastic ring, wave period and diameter of elastic ring all had significant influences on the stress and stiffness. Elastic waved ring also greatly reduced the impact force of the bearing under vibration impact.