Abstract By employing a couple of columnar magnets with a specific arrangement, a negative stiffness magnetic spring (NSMS) is designed, modelled and then experimentally validated in this paper. Such a magnetic spring with negative stiffness can be used for a semi-active seat suspension to achieve vibration reduction on vehicle drivers. Extensive simulation analysis and experimental validation based on static and vibration responses reveal that NSMS brings the beneficial low dynamics stiffness for seat suspension and reduces the resonance frequency vibration during the vertical excitation without compromising loading capacity. Besides, a semi-active seat suspension system with the NSMS can achieve excellent performance of low-frequency vibration suppression (around 28.8 % acceleration reduction under random excitation).

中文翻译：

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一种新型汽车座椅悬架系统负刚度磁弹簧设计

摘要 通过采用一对特定排列的柱状磁铁，本文设计、建模并实验验证了负刚度磁弹簧（NSMS）。这种具有负刚度的磁性弹簧可用于半主动座椅悬架，以减少车辆驾驶员的振动。基于静态和振动响应的广泛模拟分析和实验验证表明，NSMS 为座椅悬架带来了有益的低动态刚度，并在不影响承载能力的情况下降低了垂直激励期间的共振频率振动。此外，带有NSMS的半主动座椅悬架系统可以实现出色的低频振动抑制性​​能（随机激励下加速度降低约28.8％）。