Conference Proceedings

NONLINEAR DYNAMIC ANALYSIS OF JACK-UP PLATFORMS EXPOSED TO EXTREME RANDOM WAVES

Jalal Mirzadehniasar, Mehrdad Kimiaei, Mark J Cassidy

PROCEEDINGS OF THE ASME 31ST INTERNATIONAL CONFERENCE ON OCEAN, OFFSHORE AND ARTIC ENGINEERING, VOL 1 | AMER SOC MECHANICAL ENGINEERS | Published : 2012

Abstract

Deterministic waves with uniquely specified parameters remains widely used in the analysis of offshore platforms, even though the random nature of the sea-state is one of the main uncertainties in loading. The response of dynamically sensitive and highly redundant structures is significantly changed when random wave loading is considered. Therefore, to more confidently simulate wave loads, all of the randomness of water surface should be taken into account. Load history also plays an important role in the nonlinear dynamic response of structures. Accordingly, an appropriate way to consider these effects is dynamic analysis of offshore platforms using random time-domain generation of the sea ..

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University of Melbourne Researchers