Vibration Control Using a Dynamic Vibration Absorber with Air Damping

使用带空气阻尼的动态减振器进行振动控制

• 批准号: 05650240
• 负责人: ASAMI Toshihiko
• 金额: $ 1.6万
• 依托单位: Himeji Institute of Technology
• 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-05650240/
• 关键词: Damping; Damper; Dynamic Vibration Absorber; Air Damper; Vibration Control; Vibration Isolation; Viscous Damping; Optimum Design; Optimal Tuning; Optimal damping

The expressions for design of two types of air dampers are developed, which are called viscous air damper and non-viscous air damper. These air dampers are suitable for the dynamic vibration absorber (DVA), because they can supply the large amount of damping without using high-viscous fluids. The piston of the air damper vibrating in the cylinder functions as a mass of DVA,and the kinetic energy of the piston is transformed into the heat and dissipated to the surroundings. The piston receives a restoring force in addition to the damping force. Thus, it is very difficult to find the optimum tuning and damping conditions of DVA with air damping. We propose simple expressions to calculate the optimum tuning condition of DVA.The optimum damping condition of DVA is obtained by the numerical analysis. The equations required in the analysis are supplied in this report. We made an optimally tuned and damped DVA with air damping on the trial basis, and attached to a vibratory system. It was observed that the vibration amplitude of the system is reduced to only 1 percent. According to our study, the effect of DVA on the primary system can be estimated fairly accurately by the theoretical calculation. This study is not finished, however, and there are many proplems to make the DVA fit for the practical use. We shall continue our study until we develop a procedure to design systematically the optimally tuned and damped DVA with air damping.

推导了粘性空气阻尼器和无粘性空气阻尼器两种空气阻尼器的设计公式。这些空气阻尼器适用于动力吸振器(DVA)，因为它们可以在不使用高粘度流体的情况下提供大量的阻尼力。气缸内空气阻尼器的活塞作为DVA质量块起作用，活塞的动能转化为热量并散失到周围环境中。除了阻尼力之外，活塞还受到恢复力。因此，很难找到带空气阻尼器的DVA的最佳调谐和减振条件。给出了计算DVA最佳调谐条件的简单公式，通过数值分析得到了DVA的最佳减振条件。本报告提供了分析所需的方程式。我们在试验的基础上制作了一种带有空气阻尼的最佳调谐和减振DVA，并连接到一个振动系统上。观察到，该系统的振动幅度仅降低到1%。根据我们的研究，通过理论计算可以较准确地估计DVA对一次系统的影响。然而，这项研究还没有完成，还有许多问题需要解决，以使DVA更适合实际应用。我们将继续我们的研究，直到我们开发出一种程序来系统地设计具有空气阻尼的最佳调谐和阻尼型DVA。

项目成果

浅見敏彦: "主系の減衰を考慮した動吸振器の設計式について(最少分散規範に基づく設計法)" 日本機械学会論文集(C編). 59. 2962-2967 (1993)

Toshihiko Asami：“考虑主系统阻尼的动态吸振器设计公式（基于最小分散范数的设计方法）”日本机械工程师学会会刊（ed.C）59.2962-2967（1993）。

Toshihiko ASAMI,Kazunari MOMOSE and Yoshinobu Hosokawa: "Approximate Expression for Design of Optimal Dynamic Absorbers Attached to Damped Linear Systems (Optimization Process Based on the Minimum Variance Criterion)" Transactions of the Japan Society of

Toshihiko ASAMI、Kazunari MOMOSE 和 Yoshinobu Hosokawa：“附加到阻尼线性系统的最佳动态吸收器设计的近似表达式（基于最小方差准则的优化过程）” 日本学会会刊

Toshihiko ASAMI and Yoshinobu Hosokawa: "Approximate Expression for Design of Optimal Dynamic Absorbers Attached to Damped Linear Systems (2nd Report, Optimization Process Based on the Fixed-Points Theory)" Transactions of the Japan Society of Mechanical

Toshihiko ASAMI 和 Yoshinobu Hosokawa：“Approximate Expression for Design of Optimal Dynamic Absorbers Attached to Damped Linear Systems（第二次报告，基于不动点理论的优化过程）” 日本机械学会会刊

浅見敏彦: "空気ダンパの設計法に関する一考察" 日本機械学会論文集(C編). 59. 2996-3002 (1993)

Toshihiko Asami：“空气阻尼器设计方法的研究”日本机械工程师学会会刊（ed.C）59。2996-3002（1993）。

浅見敏彦ほか2名: "主系の減衰を考慮した動吸振器の設計式について(最小分散規範に基づく設計法)" 日本機械学会論文集(C編). 59. 2962-2967 (1993)

Toshihiko Asami 等人 2：“考虑主系统阻尼的动态减振器设计公式（基于最小分散范数的设计方法）”日本机械工程师学会会刊（ed.C）59.2962-2967（1993）。