Shaking table test and vibration control analysis of semi-actively friction-typed tuned mass dampers
| Autor: | Yu-Bo He, 何玉泊 |
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| Rok vydání: | 2010 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 98 A TMD system consists of an added mass with properly functioning spring and damping elements that provide frequency-dependent damping in a primary structure. The design and application of linear typed tuned mass damper systems are well developed, nonlinear TMD systems are still developing. A friction-type TMD, i.e. a nonlinear TMD, has the advantages of energy dissipation via a friction mechanism. However, a passive-friction TMD (PF-TMD) has such disadvantages as a fixed and pre-determined slip load and the PF-TMD may lose its tuning and energy dissipation abilities when the PF-TMD is in its stick state. A semi-active-friction TMD (SAF-TMD) is used to overcome these disadvantages. The SAF-TMD is composed of a mass and a semi-active friction device. The friction force of the semi-active friction device is controllable. A non-sticking friction (NSF) control law, which is able to keep SAF-TMD activated throughout an earthquake with arbitrary intensity, was conducted. In this thesis, both theoretical and experimental investigations were conduced for the SAF-TMD system. The test results also demonstrate that the dynamic responses are very consistent with the theoretical ones obtained from numerical simulation. This verifies the feasibility and efficiency of the SAF-TMD system. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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