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Modification of endurance wave analysis based on New-wave theory Saeed Mohajernassab, Mohammad Ali Dastan Diznab, Hamid Mehdigholi, Mohammad Saeed Seif∗ and Mohammad Reza Tabeshpour Department of Mechanical Engineering, Center of Excellence in Hydrodynamics and Dynamics of Marine Vehicles, Sharif University of Technology, Tehran, Iran (Received 30 June 2014; accepted 28 January 2016) The main objective of this investigation is to modify endurance wave analysis (EWA) based on New-wave theory for convenient assessment of offshore structures under extreme waves. EWA is a novel time history based approach to evaluate structural performance in various excitation levels of wave loading by intensifying wave records. In this article, modifications are proposed to determine appropriate time duration and intensifying trend for reliable and practical assessment of offshore structures. In this way, a simplified model of a real jacket platform is utilised to investigate the application of this approach under extreme wave conditions in the Persian Gulf and results are compared with typical three hour random wave simulations. It is shown that in extreme waves, except resonance states, proposed method can estimate the structural response with acceptable accuracy and very low computational costs. Keywords: New-wave theory; endurance wave analysis; jacket platform; extreme waves; assessment منبع دانلود Tabeshpour_Modification-of-endurance-wave.pdf