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研究生:楊庭維
研究生(外文):Ting-Wei Yang
論文名稱:半主動摩擦多元調諧質量阻尼器於結構減振之應用
論文名稱(外文):Vibration Control of Seismic Structures Using Semi-active Friction Typed Multiple Tuned Mass Dampers
指導教授:林其璋林其璋引用關係
指導教授(外文):Chi-Chang Lin
學位類別:碩士
校院名稱:國立中興大學
系所名稱:土木工程學系所
學門:工程學門
學類:土木工程學類
論文種類:學術論文
論文出版年:2009
畢業學年度:97
語文別:中文
論文頁數:129
中文關鍵詞:調諧質量阻尼器多元調節質量阻尼器摩擦消能半主動控制結構控制
外文關鍵詞:MTMDFriction DampersSAF-MTMDSemi-active Friction Multiple TMD
相關次數:
  • 被引用被引用:7
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調諧質量阻尼器(Tuned Mass Damper, TMD),為質量塊-阻尼-彈簧所組成之系統,具有特定頻率與阻尼,依據調頻共振原理,將結構物承受之能量轉移於TMD,並利用TMD之阻尼消散能量,改變原結構之動態特性,降低主結構之動態反應。線性TMD最佳化理論發展已漸趨成熟,而非線性系統TMD最佳化理論研究仍在發展中。
本文所建議之摩擦型TMD即為一種非線性TMD,其利用摩擦機制取代傳統之黏滯阻尼器,以消散主結構傳至TMD之振動能量。本文主要探討被動摩擦多元TMD(Passive Friction Multiple TMD, PF-MTMD)可能於地震中進入黏著狀態而失去調頻和消能之能力。進而提出半主動摩擦多元TMD (Semi-active Friction Multiple TMD, SAF-MTMD),以有效改善PF-MTMD之缺點。
SAF-MTMD係由質量塊與半主動摩擦機構所構成,該系統可隨地震力特性與結構反應改變滑動摩擦力大小,且提供穩定之往復摩擦消能運動,配合防鎖摩擦 (Non-sticking Friction, NSF)控制律,可使SAF-MTMD系統於任何地震力大小下都能保持作動狀態,避免摩擦型MTMD因黏著而失去調頻與消能效用,提升減震能力。
The design and application of linear typed tuned mass damper(TMD) systems are well developed, nonlinear TMD systems are still developing.In this paper, statement about friction typed TMD system, which is one kinds of nonlinear TMD. Friction typed TMD energy dissipating by friction mechanism, there is no need for the installation of extra damping device. But passive friction multiple TMD(PF-MTMD) slip load is fixed and pre-determined value. The PF-MTMD may lose its tuning and energy dissipating ability when the PF-MTMD is in its stick state. In order to overcome this problem, a semi-active friction multiple TMD(SAF-MTMD) in this paper.
SAF-MTMD is composed of a mass and a semi-active friction device (SAFD). The friction forces of the SAFD is controllable. A non-sticking friction (NSF) control law, which is able to keep SAF-MTMD activated throughout an earthquake with arbitrary intensity, was conducted. The performance of PF-MTMD and SAF-MTMD for protection of seismic structures was investigated numerically.
謝誌 i
中文摘要 ii
Abstract iii
目錄 iv
表格目錄 vi
圖形目錄 vii
第一章 緒論 1
1.1 研究動機與目的 1
1.2 文獻回顧 1
1.3 本文內容 4
第二章 半主動摩擦MTMD系統(SAF-MTMD) 6
2.1 半主動摩擦TMD構造與原理 6
2.2 結構裝設SAF-MTMD運動方程式 7
2.3 防鎖摩擦控制律(NSF) 10
2.4 數值模擬方法 13
2.4.1 離散時間狀態方程式 13
2.4.2 摩擦力 之決定 14
第三章 SAF-MTMD最佳參數研究 19
3.1 數值模擬之參數設定 19
3.2 PF-TMD與PF-MTMD最佳參數 23
3.3 SAF-TMD與SAF-MTMD最佳參數 23
3.4 SAF-MTMD減振效益評估 24
3.5 離頻效應探討 27
第四章 SAF-MTMD於多自由度結構之減振效益 29
4.1 標竿構架簡介 29
4.2 數值模擬歷時反應比較 30
4.2.1 比較PF-MTMD與SAF-MTMD效能指標 31
4.2.2 歷時反應分析 31
4.3 不同PGA下系統反應比較 32
4.4 離頻效應之減振效益評估 33
第五章 結論與建議 35
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