seismic response assessment of offshore wind turbines using endurance time method

This study examines the applicability of endurance time (et) method in the seismic response assessment of offshore wind turbines. the et method is a time history dynamic analysis in which structures are subjected to predesigned intensifying acceleration time histories. the et method produces incremental dynamic analysis curves by a single time history analysis, and hence considerably reduces the required computational time. although many research performed to assess offshore wind turbines structures under wind and wave loads, few attentions devoted to their performance under seismic actions. the performance of an offshore wind turbine designed by existing codes is evaluated by the et method.results will be presented at different hazard levels. the transformation of et curves by these endurance time excitations to incremental dynamic analysis curves is briefly explained.