Study on Vibration Suppression of Multi-Degree-of-Freedom System with Parametric Excitation

参数激励多自由度系统振动抑制研究

• 批准号: 17560203
• 负责人: IWATA Yoshio
• 金额: $ 2.24万
• 依托单位: Kanazawa University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-17560203/
• 关键词: Parametric Excitation; Pendulum System; Dynamic Absorber; Multi-Degree-of-Freedom System; Vibration Suppression

A purpose of this study is to develop a passive absorber which makes it possible to suppress vibration of multi-degree-of-freedom systems using pendulum type dynamic absorbers which is called a parametric excitation dynamic absorber or an autoparametric vibration absorber. Such a dynamic absorber generates vibration suppression near resonance frequency of the main system when a natural frequency of the dynamic absorber is adjusted to half of natural frequency of the main system. A pendulum of the dynamic absorber vibrates only around resonance frequency of the main system and does not vibrate except the resonance frequency. The adjusted dynamic absorber to 1st resonance, 2nd resonance, etc can suppress amplitude of the corresponding resonance and does not disturb the dynamic absorbers for other resonances because it vibrates around only resonance. A pendulum type dynamic absorber which includes a rotational spring and damper has been developed in order to expand a sphere of the applica … More tion. Pendulums vibrated by the gravity have restriction for a sphere of the application because of having limitation of vibrating direction and the pendulum size. Parametric resonance of the pendulum with a rotational spring and damper is investigated when a support point of the pendulum is vibratory, and it is shown that its pendulum can be used for the parametric excitation dynamic absorber.Then 1st and 2nd resonances of three-degree-of-freedom main system have been experimentally controlled by the dynamic absorber. The dynamic absorber with natural frequency equal to half of the 1st natural frequency of the main system reduces a peak of 1st resonance of the main system and the dynamic absorber with the frequency equal to half of the 2nd natural frequency also reduces a peak of 2nd resonance in the experiment. The suppression effect and the pendulum behavior are discussed. It is concluded that each dynamic damper becomes active only near the corresponding resonance and the main system vibration becomes small. Therefore the proposed parametric excitation dynamic absorbers can suppress vibration of multi-degree-of-freedom system. Less

本研究的一个目的是开发一种被动吸振器，它可以抑制多自由度系统的振动，使用钟摆型动力吸振器，这被称为参数激励动力吸振器或自参数振动吸振器。这种动力吸振器在将动力吸振器的固有频率调整为主系统的固有频率的一半时，在主系统的共振频率附近产生振动抑制。动力吸振器的摆仅在主系统的共振频率附近振动，并且除了共振频率之外不振动。调整到第一共振、第二共振等的动力吸振器可以抑制相应共振的振幅，并且不会干扰其他共振的动力吸振器，因为它仅围绕共振振动。为了扩大动力吸振器的应用范围，研制了一种由旋转弹簧和阻尼器组成的摆锤式动力吸振器。 ...更多信息 是的。重力振动摆由于受振动方向和摆锤尺寸的限制，使其应用范围受到限制。研究了带有旋转弹簧和阻尼器的单摆在其支点振动时的参数共振，证明了其单摆可用作参数激励动力吸振器，并利用该动力吸振器对三自由度主系统的一阶和二阶共振进行了实验控制。在实验中，具有等于主系统的第一固有频率的一半的固有频率的动力吸振器降低了主系统的第一共振的峰值，并且具有等于第二固有频率的一半的频率的动力吸振器也降低了第二共振的峰值。讨论了抑制效应和摆特性。结果表明，各动力阻尼器仅在相应的共振点附近起作用，主系统振动减小。因此，所提出的参数激励动力吸振器可以抑制多自由度系统的振动。少

项目成果

Dynamic Absorber of Parametric Excitation Pendulum with Rotational Spring

带有旋转弹簧的参激摆动力减振器

• 发表时间: 2006
• 期刊: Proceedings of Dynamics ＆ Design Conference, CD-ROM 06-7
• 作者: Yoshio IWATA;Yuji HAKODA;Toshihiko KOMATSUZAKI;Hidenori SATO
• 通讯作者: Hidenori SATO

Fundamental Study on Dynamic Absorber of Parametric Excitation Type

参量激励型动吸振器的基础研究

• 发表时间: 2006
• 期刊: Proceedings of 43th Nihon Kikaigakkai Hokurikushinetsh-Shibu Soukai-Koenkai 067-1
• 作者: Yuji HAKODA;Yoshio IWATA;Hidenori SATO;Toshihiko KOMATSUZAKI
• 通讯作者: Toshihiko KOMATSUZAKI

パラメトリック励振型動吸振器の基礎的検討

参激式动力吸振器的基础研究

• 发表时间: 2006
• 期刊: 日本機械学会北陸信越支部第43期総会・講演会講演論文集 067-1
• 作者: 石丸 和博;Kazuhiro Ishimaru;神戸 宣晃;棚橋 義夫;Nobuaki Kanbe;Yoshio Tanahashi;石丸 和博;Kazuhiro Ishimaru;石丸 和博;Kazuhiro Ishimaru;棚橋 義夫;Yoshio Tanahashi;箱田有司
• 通讯作者: 箱田有司

回転ばねを持つ振子を利用したパラメトリック励振型動吸振器

使用带有旋转弹簧的摆的参数激励型动态吸振器

• 发表时间: 2006
• 期刊: 日本機械学会 機械力学・計測制御部門講演会論文集 No.06-7 (CD-ROM)
• 作者: 石丸 和博;Kazuhiro Ishimaru;神戸 宣晃;棚橋 義夫;Nobuaki Kanbe;Yoshio Tanahashi;石丸 和博;Kazuhiro Ishimaru;石丸 和博;Kazuhiro Ishimaru;棚橋 義夫;Yoshio Tanahashi;箱田有司;岩田佳雄
• 通讯作者: 岩田佳雄