Lateral Vibration Behavior Analysis and TLD Vibration Absorption Design of the Soft Yoke Single-Point Mooring System

Mooring system is the key equipment of FPSO safe operation. The soft yoke mooring system is regarded as one of the best shallow water mooring strategies and widely applied to the oil exploitation in the Bohai Bay in China and the Gulf of Mexico. Based on the analysis of numerous monitoring data obta...

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Bibliographic Details
Published in:China ocean engineering 2017-06, Vol.31 (3), p.284-290
Main Authors: Lyu, Bai-cheng, Wu, Wen-hua, Yao, Wei-an, Du, Yu
Format: Article
Language:English
Subjects:
Absorption
Coastal Sciences
Computer simulation
Construction
Design analysis
Design engineering
Engineering
Excitation
Exploitation
Fluid- and Aerodynamics
FPSO
Maintenance management
Marine & Freshwater Sciences
Monitoring
Monitoring systems
Mooring
Mooring systems
Numerical and Computational Physics
Oceanography
Offshore Engineering
Oil
Oil exploration
Production planning
Prototypes
Resonance
Shallow water
Simulation
Vibration
Vibration analysis
Vibration control
Vibration isolators
Wave excitation
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Summary:Mooring system is the key equipment of FPSO safe operation. The soft yoke mooring system is regarded as one of the best shallow water mooring strategies and widely applied to the oil exploitation in the Bohai Bay in China and the Gulf of Mexico. Based on the analysis of numerous monitoring data obtained by the prototype monitoring system of one FPSO in the Bohai Bay, the on-site lateral vibration behaviors found on the site of the soft yoke subject to wave load were analyzed. ADAMS simulation and model experiment were utilized to analyze the soft yoke lateral vibration and it was determined that lateral vibration was resonance behaviors caused by wave excitation. On the basis of the soft yoke longitudinal restoring force being guaranteed, a TLD-based vibration damper system was constructed and the vibration reduction experiments with multi-tank space and multi-load conditions were developed. The experimental results demonstrated that the proposed TLD vibration reduction system can effectively reduce lateral vibration of soft yoke structures.
ISSN:0890-5487
2191-8945
DOI:10.1007/s13344-017-0033-2