Vol.21, Special Issue, 2021, pp. S39–S44
UDC:

In order to minimize the risk as well as cost in offshore deep-water activities, the development of several floating offshore platforms has taken place. Being the most widely employed platform for deep-water operations, the performance of a Tension Leg Platform (TLP) is remarkable in terms of its motion under the influence of waves. Dynamic analysis has a key role in the evaluation process of the performance of these platforms in offshore environment. This study focuses on the dynamic numerical analysis of the International Ship and Offshore Structures Congress (ISSC) TLP platform in irregular waves under very rough sea-state using Pierson-Moskowitz (PM) spectrum. The impact of coupling between 2 degrees of freedom (DOF) of TLP motion, surge, and heave, is a significant problem with regard to its structural response. Hence, the motion of the TLP in these two DOF is considered. The TLP’s natural periods are computed and validated. From engineering design and response analysis perspective, the study will be useful for offshore engineers to acquire deeper insights into the structural response of TLP.

Keywords: offshore engineering, structural dynamics, Pierson-Moskowitz (PM) spectrum, offshore platforms, Tension Leg Platform (TLP)