...L. F. Lyu; W. D. Zhu A new operational modal analysis (OMA) method is developed for estimation of modal parameters (MPs) of a rotating structure (RS) subject to random excitation using a nonuniform rotating beam model, an image processing method, and an improved demodulation method. The solution...

... element model and to obtain its operational modal analysis results by avoiding missing its modes. Two novel methods that consider welded joints as equivalent stiffness are proposed to create beam-shell element models of the PTSP. The main step is to match stiffnesses of beam and shell elements of a welded...

... vibration test operational modal analysis modal parameters Modal identification using output-only responses, referred to as operational modal analysis (OMA) or output-only modal analysis, has drawn great attention in civil engineering, mechanical engineering, and aeronautics and astronautics...