Research on PTMD&rsquo;s Vibration Reduction Effect On JZ20-2MUQ Offshore Jacket Platform

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Journal of Vibration and Shock ›› 2017, Vol. 36 ›› Issue (18) : 238-244.

Research on PTMD’s Vibration Reduction Effect On JZ20-2MUQ Offshore Jacket Platform

LI Yingna1.2 ZHANG Jingcai3 XUE Qichao3 HE Jian2 AN Ning3

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Abstract

This paper focus on the vibration reduction effect and the parameter optimization for viscoelastic pounding tuned massed damper(PTMD) on offshore jacket platform. Damping ratio and gap ratio are key parameters of PTMD. Optimized PTMD can sharply suppress the offshore jacket platform vibration in both displacement and acceleration. In addition, it's more efficient than TMD. A mass of simulations testify the project structure of control to be reasonable and effective, besides strong robustness. PTMD’s effective frequency range is twice as much TMD’s, it indicates PTMD has better control performance. The space requirement of mass be conditioned to 13.7% of TMD and displacement decreased in 75.3%, it can address the platform space requirements.

Key words

offshore platform / earthquake / viscoelastic / pounding / PTMD / reduction ration / effective frequency range;

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LI Yingna1.2 ZHANG Jingcai3 XUE Qichao3 HE Jian2 AN Ning3. Research on PTMD’s Vibration Reduction Effect On JZ20-2MUQ Offshore Jacket Platform[J]. Journal of Vibration and Shock, 2017, 36(18): 238-244

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