Vibration Control of Multi-Tuned Mass Dampers for An Offshore Oil Platform
摘要
The purpose of this study is to investigate the effectiveness of multi-tuned mass dampers (MTMD) on mitigating vi-bration of an offshore oil platform subjected to ocean wave loading. An optimal design method is used to determine the op-timal damper parameters under ocean wave loading. The force on the structure is determined by use of the linearizedMorison equation. Investigation on the deck motion with and without MTMD on the structure is made under design condi-tions. The results show that MTMD with the optimized parameters suppress the response of each structural mode. Thesensitivity of optimum values of MTMD to characteristic wave parameters is also analyzed. It is indicated that a singleTMD on the deck of a platform can have the best performance, and the small the damping value of TMD, the better thevibration control.