Long-term performance assessment and design of offshore structures
A copula approach is proposed to assess the long term performance of offshore structures under environmental changes. A discretized subcopula approach is presented to identify the most critical sea state parameter values in a dynamic analysis. Advantages of the copula approach over traditional models are revealed for multivariate ocean environmental parameters. The copula approach is found to be more efficient than traditional methods for long term performance assessment.
extreme value distribution nonlinear dependencies copula model reliability estimation jacket structures significant wave height