A study on floor micro-vibration in high technology factories

Lee Chien-Liang, Su Kai-Leung, Yen-Po Wang

研究成果: Conference contribution同行評審

摘要

This study explores vertical floor micro-vibration induced by the automated guided vehicles (AGVs). AGVs move on multiple long-span production floors in TFT-LCD fabs, where many vibration-sensitive tools are installed. A simplified method is proposed here to assess AGVinduced floor vibration, which has rarely been taken into account in the design stage. The statespace procedure (SSP) is adopted to compute theAGV-induced floor vibration as it preserves the desired numerical stability and accuracy in high frequency responses. The dynamic analysis of a AGV moving on an equivalent three-span beam model of a TFT-LCD building is simulated by taking into account various AGV speeds and engine forces. Numerical simulations demonstrate that if proper engine forces and excitation frequency contents of theAGVmoving loads are used, the peak AGV-induced floor micro-vibration level can be predicted by the proposed method. Moreover, the effectiveness of vibration control by span-reduction as well as energy-dissipation by viscoelastic (VE) dampers is also examined. In comparison with span-reduction, application of energy dissipation devices is more effective in vibration suppression as they enhance the dampingcharacteristicsofthemulti-spanfloorsystemwhosenaturalfrequenciesarepotentiallyin resonancewiththe excitationfrequenciesof theAGVmovingloads rangingina broadbandwidth.

原文English
主出版物標題ISEC 2011 - 6th International Structural Engineering and Construction Conference
主出版物子標題Modern Methods and Advances in Structural Engineering and Construction
編輯Siamak Yazdani, Sai On Cheung, Amarjit Singh, Nader Ghafoori
發行者Research Publishing Services
頁面801-806
頁數6
ISBN(電子)9789810879204
DOIs
出版狀態Published - 1 一月 2011
事件6th International Structural Engineering and Construction Conference: Modern Methods and Advances in Structural Engineering and Construction, ISEC 2011 - Zurich, Switzerland
持續時間: 21 六月 201126 六月 2011

出版系列

名字ISEC 2011 - 6th International Structural Engineering and Construction Conference: Modern Methods and Advances in Structural Engineering and Construction

Conference

Conference6th International Structural Engineering and Construction Conference: Modern Methods and Advances in Structural Engineering and Construction, ISEC 2011
國家Switzerland
城市Zurich
期間21/06/1126/06/11

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