In this paper, an experimental campaign devoted to the response of a friction damper subjected to uniaxial quasi-static and impact tension loads is presented. The friction damper analysed in this paper constitutes the dis-sipative part of a new type of dissipative beam-to-column connection, called Sliding Hinge Joint. A total of 8 quasi-static tests and 32 impact tests were performed by varying three parameters: coating friction materials, internal plate thickness (10 mm and 30 mm) and bolt classes (class 8.8SB and 10.9HV). The comparison between the performances of the friction dampers under impact loads with those under quasi-static loads has allowed to highlight and quantify the influence of the loading rate on: (i) the friction and ultimate resistance, (ii) the ductility, (iii) the initial elastic stiffness and (iv) the variation of the failure mode.
Experimental response of friction dampers under different loading rates
Gianvittorio Rizzano
2019
Abstract
In this paper, an experimental campaign devoted to the response of a friction damper subjected to uniaxial quasi-static and impact tension loads is presented. The friction damper analysed in this paper constitutes the dis-sipative part of a new type of dissipative beam-to-column connection, called Sliding Hinge Joint. A total of 8 quasi-static tests and 32 impact tests were performed by varying three parameters: coating friction materials, internal plate thickness (10 mm and 30 mm) and bolt classes (class 8.8SB and 10.9HV). The comparison between the performances of the friction dampers under impact loads with those under quasi-static loads has allowed to highlight and quantify the influence of the loading rate on: (i) the friction and ultimate resistance, (ii) the ductility, (iii) the initial elastic stiffness and (iv) the variation of the failure mode.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
