Response Characteristics and Reverse Design of Vibration Damping Structure for Non-metallic Pre-bending Opening

Abstract

Considering that the dynamic response of non-metallic vibration damping structures is prone to negative stiffness, a pre-bending opening vibration damping structure is studied. The response characteristics of the structure are analyzed by finite element method, and the acting mechanism of each structural parameter for the response state of the vibration damping structure is clarified. The correlation between the vibration-absorbing structure response characteristic curve and the structural parameters is established, and the accuracy of the correlation is verified. The results show that the structural parameters of the pre-bending opening damping structure have a great influence on its response characteristics, and the contact deformation period of the characteristic curve is mainly affected by the change of the main section size. The plateau period and contact deformation period of the characteristic curve is mainly affected by the pre-bending angle. Specifically, the up and down changes of point A in the characteristic curve, and the up and down, left and right changes of point B are affected by the height of the pre-bent strut, the height of the opening, and the shortest distance. The up and down, left and right changes of point A in the characteristic curve, and the up and down changes of point B are affected by the width of the pre-bent strut. The up and down, left and right changes of point B in the characteristic curve are affected by the pre-bending angle. This study can provide a reference for the optimal design of vibration damping devices.