Abstract
As possessing character of simple structure, easy installation and steady performance, friction damper has been widely used in different field s. However, d ue to can not change its performance during utiliz ation, t raditional friction damper only has limited control effect to vibration of structures. P iezoelectric material and m agnetostrictive material are two kinds of smart material s with ability of extend ing their length under excit ation of electric or magn etic field respectively. Utilizing actuator made with above two kinds of smart materials to adjust normal pressure of friction damper, then to change friction force, is a good method to make friction damper to be adjustable during application. I n this pape r, three smart friction dampers were fabricated . The dampers have same structural parameter and their damping force can be respectively adjusted by th e actuator which is made with Terfenol -D metal, p olymer -bonded Terfenol -D composite and piezoelectric cera mic. Damping force and response time of the above dampers were tested. Experimental results show that, the friction damper based on Terfenol -D metal (GMM friction damper) possesses largest adjust able force and adjustable rat e, the adjus table force and adju stable rate of friction damper based on p olymer -bonded Terfenol -D composites (GMPC friction damper) is slightly less than that of GMM friction damper, the friction damper based on piezoelectric (PZT friction damper) possesses lowest adjustable force and ad justable rat e. Experimental results also show that, the response time of GMM friction damper and PZT friction damper are close to 60 -80ms and 30ms respectively.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
