Preparation of high mechanical performance magnetorheological elastomer for engine mount

Magnetorheological elastomer (MRE) has been widely applied in vibration control systems, such as engine mounts, due to its excellent magnetorheological (MR) properties. To improve the MR effect, an optimization method for the MRE preparation process is proposed in this paper. Initially, a silicone rubber-based MRE is experimentally prepared, and the effects of four key preparation parameters-mass fraction of carbonyl iron powder, ratio of mass fractions for silicone oil and silicone rubber, pre-structure magnetic field and pre-structure time on the MR effect are analyzed. Subsequently, an orthogonal experimental design and range analysis are employed to optimize the combination of these parameters, determining the optimal preparation process for significantly enhancing the MR effect. Finally, the optimized parameter combination is validated through experiments, which demonstrates that the improved MRE exhibited superior performance. In addition, case simulations confirmed that the optimized MRE mount better meets the vibration reduction requirements of the engine mount system compared to traditional rubber mounts.