Shake Table Test of Control Effectiveness of Multiple Tuned Mass Dampers with Constraint of Stroke
| Autor: | Hung-Wei Chiang, 江宏偉 |
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| Rok vydání: | 2008 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 96 This thesis primarily deals with the stroke issue of Multiple Tuned Mass Damper (MTMD) which might meet constraint in practice for the vibration control of building. A stroke weighting factor is introduced in the parameter design stage to consider the importance of MTMD stroke. The idea is to obtain an MTMD parameter set that induces acceptable structural control effectiveness but large MTMD stroke reduction. Besides analytical study, this idea was also conducted experimentally by shaking table tests of a full-scale three story building with an actual MTMD prototype. The moving mass of the MTMD prototype is 360 kilograms (2% of total mass of test building) which consists of 5 units of TMDs. Each TMD has the identical damper and spring configurations for economical reason. The mass and the damper coefficient of TMD are adjustable. The shaking table tests were conducted at National Center on Research of Earthquake Engineering (NCREE). Various earthquake inputs were used to verify the structural control efficiency and MTMD stroke reduction. Experimental results demonstrate that reduction in MTMD’s stroke is observed with little sacrifice in roof acceleration control. The test results also show that building responses could be dominated by the higher modes because of low damping ratios. To solve this problem, the smallest unit of TMD is designed to tune the higher mode. Numerical simulation results show the newly designed MTMD is capable of controlling the multiple modal responses of the building. Shaking table tests for the newly designed MTMD is scheduled. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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