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Abstract：
This paper introduces an electromagnetic structure utilizing the controllable mechanical properties of magnetorheological elastomer (MRE) materials through magnetic flux. An adaptive elastic foundation composed of these materials is explored for vibration reduction and frequency modulation. This study investigates these effects using both a single-mass model and a coupled human-seat model. For objects supported by the adaptive elastic foundation, increasing the magnetic flux enhances the stiffness and damping, thereby significantly reducing the peak response while slightly increasing the resonance frequency. Strategies such as increasing the magnetic flux, reducing the object mass, and minimizing the system\'s degrees of freedom and internal damping contribute to enhancing the vibration reduction and frequency modulation in the adaptive elastic foundation. The simulation results indicate that for a seated human (weighing between 72.4 kg and 88.4 kg), the adaptive elastic foundation reduces the head peak response by approximately 15.7% and increases the resonance frequency by approximately 3.4% at a magnetic flux of 138 mT.
摘要：
本文介绍了一种电磁结构，该结构利用磁流变弹性体（MRE）材料的可控机械性能通过磁通量。探索了由这些材料组成的自适应弹性基础，用于减振和调频。本研究使用单质量模型和耦合的人座模型研究了这些影响。对于由自适应弹性地基支撑的物体，增加磁通量增强了刚度和阻尼，从而显著降低峰值响应,同时略微增加共振频率。增加磁通量等策略，减少物体质量，最小化系统的自由度和内部阻尼有助于增强自适应弹性地基中的减振和调频。模拟结果表明，对于坐着的人（体重在72.4公斤和88.4公斤之间），在138mT的磁通量下，自适应弹性基础将磁头峰值响应降低了约15.7％，并将共振频率提高了约3.4％。
