Abstract—A passive tuned mass friction damper (P-TMFD) has a pre-determined and fixed slip force at which it can reduces the response of the structure effectively. At any value other than the pre- determined slip force, it losses its effectiveness and simply behaves as a normal bracing system. Also, P-TMFD changes its state between stick and slip mode many times during a seismic or harmonic excitation which results in high frequency response of the system and reduces its efficiency. To overcome the disadvantage of P-TMFD, a semi-active tuned mass friction damper (SA-TMFD) is proposed. The control algorithm proposed by Lu (2004) which is known as Predictive control law, is used. The SA-TMFD produces continuous and smooth slip force and eliminates the high frequency response of the structure which usually occurs in case of P- TMFD. The governing differential equations of motion of the SDOF system with SA-TMFD are solved numerically using state-space method. To investigate the effectiveness of SA-TMFD with predictive control, the responses of the structure with SA-TMFD are compared with the responses of the structures with P-TMFD under harmonic and earthquake excitations. The result of numerical studies indicated that the SA-TMFD is more effective and has better performance level than the P-TMFD for a same input seismic and harmonic excitations.
Index Terms—P-TMFD, SA-TMFD, Predictive control, Numerical analysis, Harmonic response, Seismic control
Cite: Alka Y. Pisal and R. S. Jangid, "Dynamic Response of Structure with Semi- Active Tuned Mass Friction Damper," International Journal of Structural and Civil Engineering Research, Vol. 2, No. 1, pp. 17-31, February 2013.
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