ZN-35橡胶减振垫迟滞回线与刚度阻尼参数

Hysteresis Loop and Stiffness and Damping Parameters of ZN-35 Rubber Damping Pad

针对某运载火箭上电子设备的ZN-35橡胶减振垫,设计了理想状态下宽频振动试验装置,进行了宽频范围振动试验,获取了不同频率下减振垫的迟滞回线,并以此为基础,辨识得到相应频率激励下该材质减振垫刚度、阻尼系数等动力学参数.结果表明,该材质橡胶减振垫的动态刚度随激励频率的增大呈平滑增大趋势,动态阻尼系数随激励频率的增大呈平滑变小趋势.该研究为ZN系列橡胶减振垫的研究提供了新的视角,为该材料减振垫的设计与使用提供了基础数据.

For the ZN-35 rubber damping pad of electronic equipment on a launch vehicle,a broadband vibration test device was designed under ideal conditions,and a broadband range vibration test was carried out.The hysteresis loop of the damping pad at different frequencies was obtained,and based on this,dynamic parameters such as stiffness and damping coefficient of the damping pad under corresponding frequency excitation were identified.Results show that the dynamic stiffness of the rubber damping pad of the material increases smoothly with the increase of the excitation frequency,and the dynamic damping coefficient decreases smoothly with the increase of the excitation frequency.This research provides a new perspective for the research of ZN series rubber damping pads,and provides basic data for the design and use of the material damping pads.