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

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.