Abstract. The main obstacles in preliminary design studies or optimization of jacket
substructures for offshore wind turbines are high numerical expenses for
structural code checks and simplistic cost assumptions. In order to create a
basis for fast design evaluations, this work provides the following: first, a
jacket model is proposed that covers topology and tube sizing with a limited
set of design variables. Second, a cost model is proposed that goes beyond
the simple and common mass-dependent approach. And third, the issue of
numerical efficiency is addressed by surrogate models for both fatigue and
ultimate limit state code checks. In addition, this work shows an example
utilizing all models. The outcome can be utilized for preliminary design
studies and jacket optimization schemes. It is suitable for scientific and
industrial applications.
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