Shenoy, K.P.Poojary, U.Gangadharan, K.V.2026-02-052020Journal of Magnetism and Magnetic Materials, 2020, 498, , pp. -3048853https://doi.org/10.1016/j.jmmm.2019.166169https://idr.nitk.ac.in/handle/123456789/23997Magnetorheological elastomers (MRE) are potential resilient elements to improve the operating frequency range of a vibration isolator. The field-dependent characterization of MRE properties for varying input frequencies under lateral shear conditions has been well researched in past studies. In the present study, a novel approach to assess the magnetic field dependent rheological properties of magnetorheological elastomers under dynamic torsional loading is presented. Field and frequency-dependent properties are estimated from the dynamic blocked transfer stiffness method specified by ISO 10846. Viscoelastic properties represented in-terms of complex torsional stiffness and loss factor are estimated from the Lissajous curves within the linear viscoelastic (LVE) limit. Experiments are performed at a frequency range of 10 Hz–30 Hz under a constant input angular displacement. Magnetic field sensitive characteristics of MRE are evaluated under the field produced by a custom-made electromagnet. The results reveal a strong influence of field dependent variations on the complex stiffness in comparison with the input frequency. Variations observed in the loss factor suggests a dominance of the imaginary part of the complex stiffness on the energy dissipation. The reduced field induced enhancements in the complex stiffness are interpreted from the Magneto-static and structural based numerical simulations using ANSYS 19.1. © 2019 Elsevier B.V.ElastomersEnergy dissipationMagnetic fieldsPlasticsStructural loadsViscoelasticityBlocked transfer stiffness methodComplex stiffnessLissajousLoss factorMagneto-rheological elastomersTorsional shearStiffness