Suppression of torsional vibration by a sectored hollow rotor containing liquid

通过含有液体的扇形空心转子抑制扭转振动

• 批准号: 05650225
• 负责人: SATO Yuichi
• 金额: $ 1.41万
• 依托单位: Saitama University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05650225/
• 关键词: Torsional vibration; Dynamic absorber; Rotating body; Wave; Forced vibration; Liquid; Tuning condition

In rotating machinery, it is generally found that exciting torque occurs at the same frequency as the rotating speed or at multiples of the rotating speed. An untuned vibration damper. such as the Lancaster damber, is frequently used to reduce torsional vibrations. However, it is not as effective as a dynamic absorber. If an attached dynamic absorber has the same natural frequency as the exciting frequency, vibration is suppressed. A centrifugal pendulum vibration absorber effectively eliminates torsional vibrations if it is well tuned. However, it sometimes does not operate satisfactorily due to friction or insufficient adjustment.We have shown experimentally that torsional vibrations can be suppressed by attaching a hollow cylinder partially filled with liquid. The hollow cylinder is sectored into identical chambers by radial walls. Tuning conditions, such as the amount of water, the height of chambers and the number of sectors, were examined. The perturbation solution based on the t … More heory for inviscid liquid disregarding the Coriolis acceleration terms shows poor agreement with experiment.An The experimental and theoretical study is performed on suppression of torsional vibrations of a rotor by attaching a hollow cylinder partially filled with liquid. The hollow cylinder is divided into identical sectors by radial walls. In addition to measuring torsional vibration, surface waves were photographed to observe the motion of the contained liquid. The number of divisions of tested hollow cylinders is 2,3,4,6 and 8. The tuning conditions for fill rations are also examined. Experimental results show that the surface waves move backward, that is, travel in the direction opposite the rotation. Analysis including the Coriolis acceleration terms is presented. Analytical results show good agreement with the experimental ones whereas the analysis without Coriolis terms shows poor agreement. Accordingly, the surface wave motion is not stationary due to the Coriolis force which acts while the liquid moves. Less

在旋转机械中，通常发现激励转矩以与转速相同的频率或以转速的倍数发生。一种未调谐的减震器。例如兰开斯特阻尼器，经常用于减少扭转振动。然而，它不如动力吸振器有效。如果附加的动力吸振器具有与激励频率相同的固有频率，则振动被抑制。离心摆吸振器如果调谐良好，可有效地消除扭转振动。但是，有时由于摩擦或调节不足，它不能令人满意地工作。我们已经通过实验证明，通过连接一个部分充满液体的空心圆柱体，可以抑制扭转振动。空心圆柱体被径向壁分成相同的腔室。调节条件，如水量，室的高度和扇区的数量，进行了检查。基于t的摄动解 ...更多信息 不考虑Coriolis加速度项的无粘液体理论与实验结果不一致.本文对在转子上附加一个部分充液的空心圆柱体来抑制转子的扭转振动进行了实验和理论研究.空心圆柱体被径向壁分成相同的扇区。除了测量扭转振动外，还拍摄表面波以观察所含液体的运动。试验的空心圆柱体分为2、3、4、6和8个分区。还检查了填充率的调谐条件。实验结果表明，表面波向后移动，即沿与旋转相反的方向传播。包括科里奥利加速度项的分析。分析结果与实验结果吻合较好，而不含科里奥利项的分析结果吻合较差。因此，由于液体移动时作用的科里奥利力，表面波运动不是静止的。少

项目成果

Yuichi, Sato: "Suppression of Torsional Vibrations by a Sectored Hollow Cylinder Containing Liquid" Proc.of the 71st JSME Fall Annual Meeting. 930-63. 476-478 (1993)

Yuichi, Sato：“含有液体的扇形空心圆柱体抑制扭转振动”第 71 届 JSME 秋季年会议程。

Yuichi Sato: "Suppression of forsional vibration by a sectored hollow rotor containing liquid" Proceedings of the Asia Pasific Vibration Conference. 1. 81-83 (1993)

Yuichi Sato：“通过含有液体的扇形空心转子抑制扭转振动”亚太振动会议论文集。

Yuichi, Sato: "Suppression of torsional vibrations by a sectored hollow rotor containing liquid" Proc.of the Asia Pacific Conf. Vol.1. 81-83 (1993)

Yuichi, Sato：“通过含有液体的扇形空心转子抑制扭转振动”，亚太会议论文集。

Yuichi, Sato: "Suppression of Torsional Vibrations by a Sectored Hollow Cylinder Containing Liquid (Effect of Coriolis Force)" Proc.of the Dynamics and Design Conf., Dynamics and Measurement Division, JSME. 940-26. 346-349 (1994)

Yuichi, Sato：“含有液体的扇形空心圆柱体抑制扭转振动（科里奥利力的影响）”Proc.of the Dynamics and Design Conf.，动力学与测量部，JSME。

佐藤 勇一: "液体を内蔵した中空回転容器を用いたねじり動吸振器" 日本機械学会全国大会講演論文集. 930-63. 476-478 (1993)

Yuichi Sato：“使用含有液体的空心旋转容器的扭转动态减振器”日本机械工程师学会全国会议记录 930-63（1993）。