Investigations of Sustainable Biodegradable Oil and Magnetic Particle-Based Magnetorheological Fluid Dampers for Vibration Attenuation of a Rotor Dynamic System

This article aims to study the physical characterization and performance of a material-based magnetorheological fluid (MRF) dampers for vibration attenuation of a high-speed rotor-motor system near resonance. Four samples are synthesized by combining electrolytic iron and carbonyl iron (CI) with Castor and Karanja oil and experimentally investigated for their contribution to vibration attenuation. The results demonstrate effective vibration attenuation of the biodegradable oil-based MRF damper than the nonbiodegradable oil-based MRF damper. The best vibration attenuation is observed in the case of moderately viscous MRF. CI-based samples exhibit a lower sedimentation rate, hence recommended for MRF. The vibration amplitude is maximum for the Castor oil-based MRF damper, however, is minimum for the Karanja oil-based MRF damper. The steady and transient results of vibration amplitudes are obtained and analyzed for different currents supplied to the MRF damper. The range of unstable speed near resonance is also obtained. The prepared samples show higher attenuation of 6-25% than Sample 5. The vibration amplitude attenuation of Sample 4 and Sample 5 are 47% and 22%, respectively. The findings of this study carry significant implications for controlling the vibration of the dynamic system using an eco-friendly damping system. The error bar graph of the base vibration amplitude at different currents for different magnetorheological fluid (MRF) samples is shown in Fig. The range of standard deviation values of the MRF samples is observed from 0.7% to 9.1% at 0 to 0.6 A. The vibration amplitude of the base plate is found minimal in the case of the MRF Sample 5.image (c) 2024 WILEY-VCH GmbH