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Paper Information

Journal:   STRUCTURE AND STEEL   FALL 2016-WINTER 2017 , Volume 13 , Number 20 ; Page(s) 23 To 95.
 
Paper: 

EXPERIMENTAL STUDIES OF NEW HYBRID INERTIA ROTATIONAL FRICTION DAMPER AND THE COMPARE OF IT’S PERFORMANCE WITH INERTIA ROTATIONAL VISCOUS DAMPER

 
 
Author(s):  EZZATI R.*, MONIR H.S., AMIRI GH.R.
 
* 
 
Abstract: 

In the Seismic design of Structures, in order to energy damping applied to Structure, when an earthquake occurs, various solutions have been proposed that dampers are also in this category. Due to the relatively simple design and also more economical than other methods of energy dissipations, dampers have been more attention of researchers, In this study, in order to performance improvement of rotational inertia damper, friction and viscous mechanisms added to this type of damper. The experimental sample of rotational friction damper was made in the Urmia university earthquake laboratory and studied in a simple frame. The 8-story structure under Kobe and Tabas will be analyzed to study the effects of made hybrid damper compared with the rotational inertia damper. These intended dampers can be used with different type of braces that embedded in the structure such as Chevron and diameter. At the first in the model studied the 8-story symmetrical structure are modeled in Sap2000. Subsequently the resulting section is modeled in Abaqus2016 to study the effects of different dampers. Experimental laboratory result, is significantly improved Rotational inertia friction damper compared to other friction damper and the loss of their sudden brakes.
Also the dynamic responses of structure indicate the reduction of maximum roof displacement and also the base shear of structure. Analytical results indicate that Rotational inertia viscous damper act quickly compared with Rotational inertia friction damper and dissipate the energy applied to structure. But finally Rotational inertia friction damper will behavior better than similar viscous damper.

 
Keyword(s): SEISMIC DESIGN, INERTIA-ROTATIONAL DAMPER, FRICTION DAMPING, VISCOUS DAMPING
 
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