Analysis of dynamic vibration isolation performance of bell plate-compressed magnetorheological fluid mount

To address the issues of insufficient low-frequency damping and high-frequency stiffening in magnetorheological mount systems, this paper proposes a novel mount structure combining a bell plate with a squeeze model. Through establishing a lumped parameter model, conducting magnetic field simulations using Ansys, and integrating dynamic characteristic analysis, the study concludes that: 1) The bell plate structure significantly reduces high-frequency dynamic stiffness by 35.89 %, effectively suppressing high-frequency stiffening; 2) The squeeze channel markedly enhances low-frequency dynamic stiffness and loss angle, thereby resolving the issues of insufficient low-frequency damping and stiffness.