Dynamic Analysis of a SDOF Structure Equipped with a Telescopic Damper

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Mehraeen, Mohammad Amin | 2018

1891 Viewed

Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 50667 (53)
University: Sharif University of Technology, International Campus, Kish Island
Department: Science and Engineering
Advisor(s): Eskandari, Morteza; Mofid, Masoud
Abstract:
In this research, a single degree of freedom (SDOF) system equipped with a telescopic damper is analyzed under earthquake excitations. In order to assess the effectiveness of telescopic damper, some SDOF systems equipped with other types of dampers including viscous damper, friction damper, T-ADAS damper, and Curadelli’s lead damper(CLD) are also analyzed under similar excitations. Inspired by CLD damper, this TLSD damper is primarily introduced, developed and tested at Sharif University of Technology in Tehran by Mr. Pournamazian in 2016. Results shows that the telescopic lead shear damper can increase the CLD damper displacement by 100%. To get better results in terms of damper’s behavior under earthquake excitations, seven accelerograms were compared according to the Standard No. 2800, 4th edition. To evaluate and obtain the effect of these dampers under earthquake excitations, roof velocity, roof acceleration, roof displacement and residual displacement are analyzed and compared. Also, dampers initial stiffness and the dissipated energy per unit volume of the dampers are compared
Keywords:
Earthquake ; Telescopic Damper ; Energy Dissipation ; Passive Control ; Single Degree of Freedom System ; Dynamic Structural Analysis