This research presents spatial damping of deformable structures. Next, an overview of 22 existing damping identification methods is given and four of the most promising spatial damping identification methods (Lee-Kim, Chen-Ju-Tsuei, Fritzen IV and Local equation of motion method) were selected for subsequent experimental evaluation. It was found that modal and spatial incompleteness effects identified damping matices and that for a structure with a known equation of motion, the local equation of motion method is more eficient and gives a more precise location of the damping. Finally, a theoretical approach to damping-layout design (location and size) with frequency-content control was introduced and experimentally validated on the beam.
D.09 Tutoring for postgraduate students
COBISS.SI-ID: 287746816The research is focused on the analysis of the complex structures. It contains the theoretical and experimental comparison of the classic vs. strain Experimental Modal Analysis (EMA). Compared to the classic EMA, the strain EMA has benefits and drawbacks. One of its drawbacks is that it does not enable mass normalization of the identified mode shapes. A new approach to mass normalization is presented, based on the sensitivity analysis. The research also is focused on substructure identification that is based on the identification of the coupling forces with the strain-response measurements.
D.09 Tutoring for postgraduate students
COBISS.SI-ID: 13693467