ANALYSIS OF THE TUNED MASS DAMPER APLICATION EFFECT ON JOINT FATIGUE LIFE OF OFFSHORE FIXED STRUCTURE AT SOUTH CHINA SEA WATER
Vibration of jacket platform is related to fatigue failure which happens from relatively low cyclic stress that continuously occurs, such as wave load. This paper studies reduction of jacket platform vibration for the purpose of extending its service life. Tuned mass damper (TMD) is one of the vi...
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| 主要作者: | |
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| 格式: | Theses |
| 語言: | Indonesia |
| 主題: | |
| 在線閱讀: | https://digilib.itb.ac.id/gdl/view/45114 |
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| 機構: | Institut Teknologi Bandung |
| 語言: | Indonesia |
| 總結: | Vibration of jacket platform is related to fatigue failure which happens from
relatively low cyclic stress that continuously occurs, such as wave load. This
paper studies reduction of jacket platform vibration for the purpose of extending
its service life. Tuned mass damper (TMD) is one of the vibration control devices
commonly used on inland structures in a form of a mass attached to a primary
structure by properly tuned spring and damper. Its utilisation is usually purposed
to improve survivability of structure under extraordinary loadings, such as
seismic load. However, to utilise this approach on an offshore structure is rather
more challenging since the structure is continuously vibrated by the wave load.
This study first analyses the influence of TMD parameters in reducing structural
response to find the optimum TMD parameters. Utilisations of the TMD on
numerical models of the jacket platforms are then carried out. It is found that the
optimised TMD is effective in reducing the response of the platform 3 leg so that
it may extend the service life of the structure. |
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