【摘要】 为实现低频乃至超低频的有效隔振，研究了一种新型准零刚度隔振器。隔振器由磁致结构与气动结构并联构成。其中，磁致结构采用了三磁体与五磁体的组合，分析了磁致结构的刚度特性。通过对准零刚度结构进行静力学建模，得到了恢复力-位移、刚度-位移曲线。建立动力学模型，通过谐波平衡法，分析隔振器在受谐波激励时的幅频响应特性和力传递率，进而得到阻尼和激励幅值对隔振性能的影响规律。更多还原

【Abstract】 To achieve vibration isolation at low and ultra-low frequency, a novel quasi-zero stiffness vibration isolator has been studied. The isolator is composed of a magnetically structures and pneumatic structures. The magnetically structure is achieved through a combination of 3-magnet structure and 5-magnet structure. By establishing the static model of the quasi-zero stiffness structure, we has obtained the restoration force-displacement and stiffness-displacement curves. By establishing the kinetic model, amplitude-frequency response characteristics and force transmissibility were determined using the harmonic balance method, the influence of damping and excitation amplitude on the vibration isolation performance has revealed.更多还原