Dynamic Behavior of Floating Storage Vessel

by Robert A. Naftzger, (M.ASCE), Ocean Engr.; Marine Research and Development, Chicago Bridge and Iron Co., Plainfield, Ill.,
Subrata K. Chakrabarti, (F.ASCE), Dir. of Marine Research and Development; Chicago Bridge and Iron Co., Plainfield, Ill.,

Serial Information: Journal of the Waterway Port Coastal and Ocean Division, 1980, Vol. 106, Issue 2, Pg. 157-167

Document Type: Journal Paper


The response of a cylindrical floating storage tank due to small amplitude reqular waves is analyzed. The storage vessel is anchored by means of a riser connected to the ocean floor. The analysis is based on a two-degree-of-freedom, rigid-body motion. The solutions are obtained in closed form. Numerical results are presented in nondimensional form to describe the motion. A wave tank test was performed with an over-and-under storage tank model. The motion of the model in regular waves was recorded. The correlation between the model test data and the theoretical results is found to be good.

Subject Headings: Wave tanks | Motion (dynamics) | Storage tanks | Ships | Cylindrical tanks | Rigid body dynamics | Ocean engineering | Floors

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