双层金属橡胶隔振器的理论分析与隔振性能研究  

Theoretical Analysis and Vibration Isolation Performance Study of Double-layer Metal Rubber Isolators

作　　者：余慧杰[1] 张升 YU Huijie;ZHANG Sheng(School of Mechanical Engineering,Shanghai University of Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学机械工程学院,上海200093

出　　处：《噪声与振动控制》2021年第5期247-250,共4页Noise and Vibration Control

摘　　要：针对精密电子设备对隔振性能的高要求,研究并设计一种双层金属橡胶非线性隔振器。首先根据金属橡胶的非线性特点,建立一种2自由度金属橡胶隔振器的力学模型,用平均法求解该力学模型的绝对位移传递率曲线并用数值仿真进行验证。然后讨论干摩擦力和非线性刚度等参数对隔振效果的影响,分析结果表明,干摩擦的增大能明显降低共振峰值,而非线性刚度的增大不仅会改变共振峰点的频率,还会增加共振区的放大倍数;最后根据理论模型优化设计双层隔振物理系统,并进行物理试验来验证理论模型的正确性。理论分析和实验验证结果可为为金属橡胶隔振器的设计提供依据和方法。Aiming at the high requirements of vibration isolation performance of precision electronic equipment,a type of double-layer metal rubber nonlinear vibration isolators was researched and designed.Firstly,based on the non-linear characteristics of metal rubber materials,a mechanical model of a 2-DOF metal rubber material isolator was established.The absolute displacement transmissibility curve of the mechanical model was solved by the average method and verified by numerical simulation.Then,the influences of dry friction and nonlinear stiffness on the vibration isolation effect of this model were analyzed.It is shown that the increase of dry friction can significantly reduce the resonance peak,and the increase of nonlinear stiffness will not only change resonance peak position,but also increase the resonance peak magnitude.Finally,the double-layer vibration isolation physical system was optimized and designed based on the theoretical model,and physical tests were performed to verify the correctness of the theoretical model.The theoretical analysis and experimental verification in this study provide a basis and method for the design of metal rubber isolators.

关 键 词：振动与波 金属橡胶 平均法 隔振器 非线性 

分 类 号：TB535[理学—物理] O322[理学—声学]