... to the complex marine environment, noise disturbance, non-stationary and nonlinear response. In this study, operational modal analysis (OMA) of the monopile OWT was conducted based on the in-situ monitoring data at an offshore wind farm. Various time and frequency domain signal processing methods combined...

... ABSTRACT This paper presents the analysis of the modal frequencies and mode shapes of the Vestas four-rotor wind turbine using two operational modal analysis methods. The Frequency Domain Decomposition method is used for standstill analysis, and the Ibrahim Time Domain method is used...

... ambient vibration, the principles of operational modal analysis (OMA) are applied to harvest the dynamic properties of the structure. Successively, a dynamic model is formulated and used to calculate the loading from a random sea state using the response of the structure. A laboratory experiment...

... digital twin stiffness fatigue life laboratory model operational modal analysis displacement sea state superelement fatigue damage upstream oil & gas buoy data eigenmode platform natural frequency modal coordinate frequency deviation modal parameter design life jonswap...

... that by monitoring the response of the structure and utilizing Operational Modal Analysis (OMA) it is possible to indirectly identify loads, occurring in actual conditions. A method employing modal parameters to establish a response function, which is used to back-calculate the hydrodynamic wave loading...

... were identified by experimental modal analysis and operational modal analysis for hull girder vibration mode of container ship. Also, Rocca et al (2011) show damping ratios which were identified by operational modal analysis for research and training ship. In the present study, simple damping model...