Abstract

Analysis of the rigid body dynamic performance for offshore pipeline plough is important for structural OPP optimization, fatigue strength examination and hydraulic system design. This paper presents a method by which the soil resistance is numerically calculated by smoothed particle hydrodynamics method in ABAQUS. The towing force of the offshore pipeline plough and force in the skid arm are calculated by the rigid body dynamic model using soil resistance as input in ADAMS. This integrated simulation model is validated by the comparison of simulation and land test results. The simulation results show that the towing force at the beginning of trenching process declines as the water wave height increases when the wave has negative amplitude, but there is less impact during deeper trenching. The towing force increases nonlinearly as values of the soil technical parameters rise steadily. Additionally, the different fluid and soil parameters have less impact on the skid force.

Keywords:
soil resistance, program 1, plough, plough body, opp, skid arm, equation, offshore pipeline, program 2, reaction force
Subjects:
Pipelines, Flowlines and Risers, Information Management and Systems, Offshore pipelines
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2014. International Society of Offshore and Polar Engineers
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