EXPERIMENTAL VIBRATION ANALYSIS OF A CANTILEVER BEAM UNDER MAGNETIC LEVITATION

http://doi.org/10.71284/jasem202612

Abstract

In this study, it is aimed to experimentally model a cantilever beam under the effect of electromagnetic force using a magnetic levitation (maglev) system and to investigate its vibration behavior. In the experimental setup, the free end of an aluminum beam fixed at one end is coated with a ferromagnetic material and exposed to the magnetic field generated by electromagnets. In this way, a contactless damping mechanism is achieved within the system. In the established experimental setup, the dynamic responses of the beam were measured under excitations applied at different frequencies, and frequency response functions were obtained. Using these data, the natural frequency and damping characteristics of the system were determined, and subsequently, experimental modeling was carried out using a second-order transfer function through optimization methods. Additionally, by varying the magnitude of the electromagnetic force, its effect on the damping ratio of the system was examined, and it was observed that increasing the magnetic force significantly reduces the vibration amplitude. Consistent with similar studies in the literature, it has been confirmed that the contactless electromagnetic damping method provides effective vibration suppression without altering the system dynamics compared to conventional mechanical dampers. The obtained results demonstrate that maglev-based electromagnetic systems offer high accuracy and applicability in the experimental modeling of flexible structures and active vibration control. This study provides an experimental contribution to the literature on the modeling of beam systems using a contactless damping approach.