Open Access  

Abstract

Finding new and better means of protecting structures from the damaging effects of environmental forces such as earthquake, hurricane Is a constant challenge for structural engineers. One attracting solution ia to make structures adjust themselves to external forces. The change of dynamic properties of the system such as the mass, the damping or the stiffness is realized passively or actively. In this paper, a demo exemple about the change of system responses in a certain natural frequenly using a passive tuned-mass damper (PTMD) is illutrated.