A two-stage inertial amplification tuned mass damper with grounded stiffness element

Abstract

This paper proposes a novel two-stage inertial amplification tuned mass damper with grounded stiffness element (TIAS-TMD). The fixed-points theory of the classical TMD is extended to the TIAS-TMD for optimization, and parametric studies are conducted. The performance of several existing TMDs and the TIAS-TMD are calculated and compared. Finally, a prototype of TIAS-TMD is designed and manufactured, and its vibration attenuation performance is tested. Results show that the TIAS-TMD is superior either in reducing the maximum amplitude of the primary structure and the absorber, or in reducing and broadening the better attenuation frequency range.