Numerical Analysis of Dynamics of Ship-OWT (Offshore Wind Turbine) Collision


1 M.S. in civil engineering, Islamic Azad University, Science and Research Branch of Tehran

2 Assistant Professor, Islamic Azad University, Science and Research Branch of Tehran


Offshore Structures supply vessels during operation are at risk of collision. The ship has random load, including offshore structures resistance is raised. In this paper, under the impact of a wind turbine offshore supply vessel with 5 different mass displacements are analyzed. Structural study examined the environmental conditions intermediate depth ocean water using ABAQUS finite element model of the software. The effects of static preload weight of turbine blades and environmental loads (wind, wave, sea current and the water pressure on the turbines) before hitting the ship dynamics, in terms of the structural behavior. Parameters such as power and momentum of support, around the turbine horizontal displacement, stress and strain Von-Mises different parts of turbines in different loading conditions (change in mass displacement of picky float) compared together and the results are discussed.


[1] PETRONAS Technical Specifications, 2005, PTS 20.073, Design of Fixed Offshore Structures. [2] Serco Assurance (2003). “Ship-Platform Collision Incident Database”, Health and Safety Executive, Research report 053. [3] Ellinas, C.P., “Mechanics of Ship/Jack-up Collision”, J. Construct. Steel Research, V.33, 1995, pp. 283-305. [4] Menkes S.B., Opat, H.J., “Tearing and Shear Failures in Explosively Loaded Clamped Beams”, Exp. Mech., 1973. [5] Teeling-Smith R.G., Nurick G.N. “The Deformation and Tearing of Thin Circular Plates Subjected to Impulsive Loads”. International Journal of Impact Engineering, 1991. [6] Olson, M.D., Fangan, J.R., and Nurick, G.N., “Deformation and Rupture of Blast Loaded square Plates-Predictions and Exprimental”. International Journal Impact Engineering, 1993. [7] Nurick G.N., Shave C.G. “Deformation and tearing of Thin Square Plates Subjected to Impulsive Loads”. International Journal of Impact Engineering, 1995. [8] L.A. Louca, Y.G. Pan. “Response of Stiffened Plate under Blast Load Engineering Structure, Vol.20, No.12, 1998. [9] Nurick G.N., Olson M.D., Gagnan J.R. and Levin, A. “Deformation and tearing of blastloaded stiffened square plates”. International Journal of Impact Engineering, 1995. [10] K W Consultants Ltd (2002). “Resistance of Semi-submersibles to Collision,” Health and Safety Executive, Offshore Technology Report 2002/007. [11] American Petroleum Institute, 2000, API RP 2A-WSD, Planning, Designing and Constructing Fixed Offshore Platforms. [12] Sadeghi, Kabir, "Engineering Coasts, Ports and Marine Structures", Department of Water and Power (Shahid Abbaspoor), 1380. [13] Patil, K.C., and Jangid, R.S., Passive Control of Offshore Platform. Ocean Engineering, Vol. 32, pp. 1933-1949,2005. [14] Morison, J. R, O'Brien, M. P., Johnson, J. W., and Schaaf, S. A, 1950. "The forces exerted by surface waves on onopoles". 1.Petrol. Teehn., 189, pp. 149-154. [15] DNV, Det Norske Veritas. DNV-OS-J101 Offshore Standard. Design of Offshore Wind Turbine Structures. 2011.