Analysis Of Vibration Reduction Performance Of Inertial Tuned Mass Damper And Active Pounding Tuned Mass Damper

The tuned mass damper has been widely used in engineering due to its simple structural design,convenient maintenance and economical advantages.The inertia is a two-node mass element first proposed by Smith,which has a negative stiffness effect and can reduce the general stiffness coefficient of the power system.Combining the inertia with the tuned mass damper to form the inertia tuned mass damper can effectively improve the damping efficiency of the tuned mass damper.In this paper,the vibration control effects of the inertia tuned mass damper and the tuned inert damper are simulated and analyzed.Single-sided pounding tuned mass damper is a new type of vibration damper proposed in recent years.In order to further improve its vibration damping performance,this paper studies the active single-sided pounding tuned mass damper.The main work done in this paper is as follows:(1).The development history and research status of tuned mass dampers,inertia and pounding-tuned mass dampers are summarized and summarized.(2).Aiming at the two arrangements of inertia tuned mass damper,the mechanical model of the structure-inert tuned mass damper system is established,and the influence of relevant parameters on the dynamic characteristics of the system is analyzed.It is concluded that the series-type inertia is not conducive to the control of structural vibration by TMD,and the grounding inertia can effectively increase the vibration control performance of TMD and reach the conclusion that the mass ratio is increased.(3).A four-layer frame structure-tuned inertia damper mechanical model was established.The influence of the installation position on the first-order modal free vibration and the forced vibration control under the simple harmonic excitation is analyzed.The optimal parameters and dynamic characteristics of the system under inertial mass of different inertia are studied.The double extremum phenomenon was analyzed.(4).The coupling model of active single-sided pounding tuned mass damper and single degree of freedom system is established.The semi-active control algorithm is proposed.The effects of frequency ratio and control force on the damping effect are studied.Active single-sided pounding tuning is obtained.The relationship between the optimal parameters of the mass damper and the mass ratio verifies the feasibility of external force intervention to increase the robustness of the single-sided pounding tuned mass damper.