characterization of an in-house prepared magnetorheological fluid and vibrational behavior of composite sandwich beam with magnetorheological fluid core

In the present work, two different compositions of magnetorheological (mr) fluid samples with 24 and 30% volume fractions of carbonyl iron (ci) particles are prepared. the mr fluid samples contain ci particles as a dispersive medium, silicone oil as a carrier fluid, and white lithium grease as an anti-settling agent. the effects of oscillating driving frequency, strain amplitude, magnetic field, and the percentage of ci particle on the rheological properties of the mr fluid samples are presented. the properties of mr fluid samples are utilized to design and model the carbon/epoxy composite sandwich beams using the ansys composite pre-post (acp) module. the modal, harmonic, and transient analyses are performed on all the modeled sandwich beams to study the influence of mr fluid core thickness, face layer thickness, ci particles volume percentage, and magnetic eld on the vibrational response of the sandwich beams. the present study shows significant results in the vibrational response of the composite sandwich beam, which will be more useful for structural applications.