 | Stochastic Response of Offshore Platforms
X. M. LI, , Singapore
ISBN: 1-85312-627-6
Published: 1998
Pages:
Hardback
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In wave loading of offshore structures, non-linearities cannot be ignored, but can usually be linearised. However, the replacement of the non-linear system by a linearised one also introduces some inherent limitations. A natural extension of the linearisation is to replace the original non-linearity by an equivalent non-linear polynomial expansion. Where a polynomial expansion up to a quadratic order is used, the method is known as the statistical quadratisation. In this study the statistical quadratisation method is further developed. In order to obtain more reliable results a third-order method, termed statistical cubicization method, is proposed as an improvement to the linearisation and quadratisation methods. The fatigue damage of offshore platforms is also investigated and numerical results are presented.
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