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Abstract

Collisions between ships and tension leg platform wind turbines (TLPWTs) result in the TLPWT damage, including tower damage and tension leg breakage. This paper details a collision between a ship and TLPWT simulated using the LS-DYNA software package. During simulation, the behaviors of the water around the ship and of the TLPWT were processed using the constant added mass and the fluid–structure interaction methods, respectively. The results indicate that the energy conversion during collision is generally consistent with the law of conversion of energy, suggesting that the simulation’s calculations are acceptable. The TLPWT simulation results imply that two distinct collisions occurred during the broader collision period because of TLPWT pitch or roll, and the simulated damage mainly occurred in the contact areas. All tension legs were not slack during collision because of prestress, and the responses of the symmetrical tension legs were largely equivalent. The response of the TLPWT decreased over time due to water resistance. The results of this paper can be consulted to prevent and reduce losses caused by ship–TLPWT collisions.

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