Tuneless Dampers for Suppressing Vibrations of Shick Plates Structures of Steel

用于抑制钢垫板结构振动的无调谐阻尼器

• 批准号: 13650261
• 负责人: URATA Yoshihiko
• 金额: $ 2.24万
• 依托单位: Shizuoka Institute of Science and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13650261/
• 关键词: Thick plate; Steel plate; Structure; Vibration; Damping; Damper; Tuneless; Design; 厚板構造; 騒音・振動; 解析; 実験; 過渡応答; 振動数応答; 粘弾性; C型パンチプレス; 無調整吸振器; 解析解

Structures made of steel plates like as a C-shaped punch press have less internal friction and less structural damping. Therefore vibrations in such structures are not rapidly damped and these vibrations causes noise problems. In this investigation, a new damper for these structures is proposed. The damper consists of long metal bars and many viscoelastic springs that connect the bars to the plates. Strain energy stored in viscoelastic springs changes to heat. This causes damping of the plate vibrations.Experiments are done to confirm the effects of the proposed dampers. In the experiments, natural rubber, soft polyurethane, silicone rubber and so on are used as materials of the viscoelastic springs. A stainless steel pate is used. Its mension is 10mm in thickness, 600mm in width and 1000mm in height. Frequency responses and impulse responses of the pate with the dampers are measured. Excellent damping properties are obtained in all the cases measured. The case of silicone rubber, particularly, shows high damping property. This means existence of the optimum design of the proposed tuneless damper.For numerical simulation, a method of bending vibration analysis of plates using analytic solutions is investigated. In this study, concentrated exciting force and related problems are discussed. The concentrated forces express the forces to plates from springs. Theoretical investigation should be continued.

由钢板制成的结构，如C形冲床，具有较小的内摩擦和较小的结构阻尼。因此，这种结构中的振动不能迅速衰减，并且这些振动引起噪声问题。在这项调查中，提出了一种新的阻尼器，这些结构。阻尼器由长金属杆和许多连接杆和板的粘弹性弹簧组成。储存在粘弹性弹簧中的应变能转化为热量。实验验证了所提出的阻尼器的有效性。在实验中，采用天然橡胶、软质聚氨酯、硅橡胶等材料作为粘弹性弹簧的材料。使用不锈钢板。它的尺寸为10mm厚，600mm宽，1000mm高。测量了带阻尼器平板的频率响应和脉冲响应。在所有测量的情况下都获得了优异的阻尼性能。尤其是硅橡胶的情况，显示出高阻尼特性。在数值模拟方面，本文研究了一种利用解析解分析板弯曲振动的方法。本文对集中激振力及其相关问题进行了探讨。集中力表示弹簧对板的作用力。理论研究还需继续。

项目成果

Analysis of Bending Vibration of Plates Using Analytic Solutions (Concentrated Exciting Forces and Related Problems)

使用解析解分析板的弯曲振动（集中激振力及相关问题）

• 发表时间: 2002
• 期刊: Transactions of the JSME.C Vo168, No.668
• 作者: Yoshihiko URATA

浦田喜彦: "解析解による板の曲げ振動解析(集中励振力とその関連問題)"日本機械学会論文集(C編). (掲載可、未定).

Yoshihiko Urata：“使用解析解的板的弯曲振动分析（集中激振力和相关问题）”日本机械工程师学会会议录（C版）（可出版，未定）。

解析解による板の曲げ振動解析(集中励振力とその関連問題)

使用解析解进行板的弯曲振动分析（集中激振力和相关问题）

• 发表时间: 2002
• 期刊: 日本機械学会論文集C編 68
• 作者: 浦田喜彦