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Chapter 3 Loads and Qnamic Response for qffshore Structures 55
and the extreme response at possibility level a is:
(3.10)
Hydrodynamic
modeling
.c
Hydrodynamic analysis
(seakeeping)
.c
Structural (FE)
modeling L loading
I
Structural (FE)
I I 1 I
Extreme storm Long-term wave
wave spectrum description (WSD)
Responses to Ensemble of long-
extreme storm term responses
Short-term extreme Combined Long-term extreme
responses extreme responses responses
Figure 3.12 Extreme Response and Strength Assessment Procedure
(Zhao, Bai & Shin, 2001)
Ochi (1981) has shown that the expected number of positive maxima (peak values) for a short-
term random process can be expressed as:
