Development and experimental verification of optimum design methods for dynamic absorbers for inhibiting pattern formation phenomena in contact rotating systems

用于抑制接触旋转系统中图案形成现象的动态吸振器优化设计方法的开发和实验验证

• 批准号: 17360108
• 负责人: KONDOU Takahiro
• 金额: $ 5.7万
• 依托单位: KYUSHU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 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/grant/KAKENHI-PROJECT-17360108/
• 关键词: Dynamics ＆ Control; Vibration control; Self-excited vibration; Pattern formation phenomena; Dynamic absorber; Optimum design; Contact rotating system; Time delay system; 安定解析

Previous studies have considered that the major occurrence mechanism of pattern formation phenomena is unstable vibrations generated in linear time delay systems. Many characteristics of these phenomena have been successfully explained using this mechanism.In this study, the following investigations were performed to establish practical and easy-to-use methods for preventing the occurrence of pattern formation phenomena.1. Development of a new stability analysis method and clarification of fundamental concepts(1) A new stability analysis method based on the existence condition for boundaries between stable and unstable regions was developed for two-and three-degree-of-freedom systems.(2) A structural design method that inhibits the occurrence of pattern formation phenomena was formulated by using this new stability analysis method.2. Establishment of optimum design for dynamic absorbers for inhibiting the pattern formation phenomena.(1) For single-degree-of-freedom systems, an optimum … More design method that does not require completely characterizing the system was formulated by assuming the worst conditions that maximize the instability intensity of the main system.(2) For multi-degree-of-freedom systems, a method involving individually designing dynamic absorbers for each mode was proposed. This method effectively stabilized all the modes and greatly reduced the design time.3. Experimental verificationAn experimental system was produced to verify the effectiveness of the proposed stability analysis method. This was a multistage roll system that models the viscoelastic roll used in paper-making machines, etc. Experiments with single-degree-of-freedom systems were mainly carried out. The results indicate that unstable vibrations occur in the same range as that of the results obtained using the new stability analysis method, verifying the effectiveness of this method. Based on the results obtained in this study, verification of the effectiveness of the prevention method using dynamic absorbers will be performed in the future. Less

以往的研究认为，模式形成现象的主要发生机制是线性时滞系统中产生的不稳定振动。利用这一机制成功地解释了这些现象的许多特征。在本研究中，进行了以下研究，以建立实用且易于使用的方法来防止图案形成现象的发生。发展了一种新的稳定性分析方法并澄清了基本概念(1)针对二自由度和三自由度系统，提出了一种基于稳定区和不稳定区边界存在条件的稳定性分析方法。(2)利用这种新的稳定性分析方法，提出了一种抑制花纹形成现象的结构设计方法。抑制斑图形成现象的动力吸振器优化设计方法的建立：(1)单自由度系统的最优…对于多自由度系统，提出了一种针对每一种振型分别设计动力吸振器的方法，该方法不需要对系统进行完全表征。该方法有效地稳定了所有模式，大大缩短了设计时间。实验验证制作了一个实验系统，验证了所提出的稳定性分析方法的有效性。这是一个用来模拟造纸机等中使用的粘弹性辊的多级辊系统。主要进行了单自由度系统的实验。结果表明，不稳定振动发生在与用新的稳定性分析方法得到的结果相同的范围内，验证了该方法的有效性。基于本研究的结果，采用动力吸振器的预防方法的有效性将在未来进行验证。较少

项目成果

グラフ理論を利用した一般化伝達剛性係数法の提案

基于图论的广义传递刚度系数法的提出

• 发表时间: 2005
• 期刊: 日本機械学会論文集(C編) 71・712
• 作者: 劉孝宏;Yasuhiro BONKOBARA et al.;RYU Takahiro;Yasuhiro BONKOBARA;Nobuyuki SOWA et al.;松崎健一郎;Nobuyuki SOWA;Kenichiro MATSUZAKI;松崎健一郎;近藤孝広;松崎健一郎;盆子原康博;宗和伸行;Nobuyuki SOWA et al.;Yasuhiro BONKOBARA et al.;Kenichiro MATSUZAKI et al.;盆子原康博
• 通讯作者: 盆子原康博

接触回転系におけるパターン形成現象(軸の曲げ変形を考慮したモデルの最適設計)

接触旋转系统中的图案形成现象（考虑轴弯曲变形的模型优化设计）

• 发表时间: 2005
• 期刊: 日本機械学会機械力学・計測制御部門Dynamics & Design Conference 2005 05-15(CD-ROM論文集)
• 作者: 劉孝宏;Yasuhiro BONKOBARA et al.;RYU Takahiro;Yasuhiro BONKOBARA;Nobuyuki SOWA et al.;松崎健一郎;Nobuyuki SOWA;Kenichiro MATSUZAKI;松崎健一郎;近藤孝広;松崎健一郎;盆子原康博;宗和伸行;Nobuyuki SOWA et al.;Yasuhiro BONKOBARA et al.;Kenichiro MATSUZAKI et al.;盆子原康博;近藤孝広;Takahiro KONDOU;Kenichiro MATSUZAKI;Yasuhiro BONKOBARA;Nobuyuki SOWA;Nobuyuki SOWA;Yasuhiro BONKOBARA;Kenichiro MATSUZAKI;Yasuhiro BONKOBARA;Takahiro KONDOU;宗和伸行
• 通讯作者: 宗和伸行

Vibration Analysis of a Framework Structure by Generalized Transfer Stiffness Coefficient Method

广义传递刚度系数法框架结构振动分析

• 发表时间: 2007
• 期刊: Journal of System Design and Dynamics 1・1
• 作者: 劉孝宏;Yasuhiro BONKOBARA et al.
• 通讯作者: Yasuhiro BONKOBARA et al.

Polygonal Wear of Work Rolls in a Hot Leveler of Steel Making Machine (4th Report, Experimental Verification of a Countermeasure by Using Dynamic Absorbers)

炼钢机热矫直机工作辊的多边形磨损（第四报告，使用动态吸收器对策的实验验证）

• 发表时间: 2006
• 期刊: Transaction of the JSME, Series C Vol.72,No.724
• 作者: 劉孝宏;Yasuhiro BONKOBARA et al.;RYU Takahiro;Yasuhiro BONKOBARA;Nobuyuki SOWA et al.;松崎健一郎;Nobuyuki SOWA;Kenichiro MATSUZAKI
• 通讯作者: Kenichiro MATSUZAKI

Prevention Method for Unstable Vibration Caused by Time Delay in Contact Rotating Systems(1st Report, Application of New Stability Analysis)

接触旋转系统时滞引起的不稳定振动的预防方法（第1次报告，新稳定性分析的应用）

• 发表时间: 2005
• 期刊: Transaction of the JSME, Series C Vol.71,No.709
• 作者: 劉孝宏;Yasuhiro BONKOBARA et al.;RYU Takahiro;Yasuhiro BONKOBARA;Nobuyuki SOWA et al.;松崎健一郎;Nobuyuki SOWA;Kenichiro MATSUZAKI;松崎健一郎;近藤孝広;松崎健一郎;盆子原康博;宗和伸行;Nobuyuki SOWA et al.;Yasuhiro BONKOBARA et al.;Kenichiro MATSUZAKI et al.;盆子原康博;近藤孝広;Takahiro KONDOU;Kenichiro MATSUZAKI;Yasuhiro BONKOBARA;Nobuyuki SOWA
• 通讯作者: Nobuyuki SOWA