Performance of Tuned Mass Damper of Three Structures

Abstract:

This paper proposes three types of tuned mass damper（TMD）， i.e.， cross shaped mass damper （CTMD）， X shaped mass damper （XTMD）， and tourbillion shaped mass damper（TTMD） with free motion in the plane. The stiffness changes， modal， and vibration responses under harmonic excitation of the three TMDs are compared and analyzed using the finite element model. The analysis results indicate that when the excitation direction of a TMD is perpendicular to the spring， the spring force exhibits a nonlinear behavior， and compared with other TMDs， TTMD has a better robustness and higher utilization efficiency. When the mass ratio is greater than 3%， the vibration suppression of TTMD is more significant.

Key words:tuned mass damper(TMD);cross-type tuned mass damper(CTMD);X-type tuned mass damper(XTMD);tourbillion-type tuned mass damper(TTMD);mechanical behavior;dynamic properties