Prediction of most probable extreme values for jackup dynamic analysis

Long-term performance assessment and design of offshore structures

“…Approaches to answer these two challenges include the use of efficient numerical methods and model test [1,5], reduction in simulation efforts by selecting the critical sea states [41], use of environmental contour and inverse first order reliability method (IFORM) [49,28], and use of bootstrap methods in deriving the confidence interval from the structural analysis [15]. These studies also assessed various types of structures with regards to long term performance, such as jacket structures [18], jackup rigs [39] as well as floating structures [56]. It was recognized that the long term assessment remains one of the most difficult tasks, and the statistical modeling of the ocean http://dx.doi.org/10.1016/j.compstruc.2015.02.029 0045-7949/Ó 2015 Elsevier Ltd. All rights reserved.…”

Dynamic stress analysis of the leg joints of self-elevating platform

“…Hartnett (2000) outlined the application and validation of a frequency-domain response model, which was validated in a number of different ways. Lu et al (2002) compared four major dynamic time-domain methods recommended in SNAME T&R Bulletin 5-5A (1994), including Drag/inertia parameter method, Weibull fitting method, Gumbel fitting method and Winterstein/Jensen method. In their studies, the leg-to-hull flexibility, P-delta effect and foundation fixity are considered.…”