Dynamic behavior of articulated single point mooring system

Conference · Sun Dec 31 04:00:00 EST 1995

OSTI ID:256926

Jain, A K ^[1]

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1. Indian Inst. of Technology, New Delhi (India)

Analysis of an Articulated Single Point Mooring System subjected to wave loading is presented. The analysis considers non-linearities caused due to Morison Equation`s hydrodynamic drag; variable buoyancy and variable added mass introduced by the variable submergence effect; the effect of instantaneous position of the tower; and the surge motion of the tanker transferred to the tower. The random time history of the oil tanker is derived with the help of it`s Response Amplitude Operator and the specified sea surface elevation spectrum. The analysis is carried out by an iterative frequency domain method which takes care of the above non-linearities. With the proposed method of analysis, a parametric study is conducted, in order to investigate the behavior of the single point mooring system subjected to random waves. The parameters include surge motion o the tanker, current velocity, random waves and point of attachment of the tanker to the tower. From the analysis, the mean peak value of the response and the statistics of the distribution of peak value of heel angle response are also obtained.

• OSTI ID: 256926
• Report Number(s): CONF-950604--; ISBN 1-880653-17-6
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
42 ENGINEERING
FREQUENCY ANALYSIS
MATHEMATICAL MODELS
MOORINGS
OFFSHORE PLATFORMS
PETROLEUM INDUSTRY
RESPONSE FUNCTIONS
WATER WAVES
WAVE FORCES