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建立了双盘悬臂柔性转子—同心型挤压油膜阻尼器 (SFD)系统的运动微分方程 (定常转速和定常加速 )及突加不平衡响应方程 ,分析了系统参数对于突加不平衡响应的影响和加速通过双稳态响应区的突加不平衡及加速响应特性。研究结果表明 :系统参数的变化对突加不平衡响应的变化有较大的影响。对于加速通过双稳态响应区的突加不平衡响应 ,突加不平衡发生在不同的转速比区 ,响应走的路径也不相同 ;不同的盘上发生突加不平衡 ,对于不同临界响应有影响 ;对应两个盘上不同的不平衡量 ,不同阶临界转速处的加速度响应特性不同 ;当悬臂盘距 SFD轴承支承的相对长度较大时 ,系统整体的加速度响应特性较好 ,但突加不平衡后的瞬态振幅也较大。
The differential equations of motion (ODT) and sudden imbalance response of SFD system with double-disk cantilever were established, and the influence of system parameters on the sudden unbalance response was analyzed And accelerate the sudden imbalance and acceleration response characteristic through the bistable response zone. The results show that the change of system parameters has a great influence on the change of the unbalanced response. In the case of accelerating the unbalanced response through the sudden response of the bistable response zone, the sudden imbalance occurs in different speed ratio zones and the paths of the response paths are also different. Sudden imbalance occurs on different plates, and for different critical responses The acceleration responses of different order critical speeds are different when the different imbalances of two disks are different. When the relative length of cantilever disk to SFD bearing is larger, the overall acceleration response of the system is better, After the balance of the transient amplitude is larger.