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http://dx.doi.org/10.12989/sem.2021.77.3.407

A new proposed Friction Multi-layered Elastomeric Seismic Isolator (FMESI)  

Mirali-Katouli, Gholamali (Faculty of Civil Engineering, Babol Noshirvani University of Technology)
Abdollahzadeh, Gholamreza (Faculty of Civil Engineering, Babol Noshirvani University of Technology)
Publication Information
Structural Engineering and Mechanics / v.77, no.3, 2021 , pp. 407-416 More about this Journal
Abstract
Seismic isolation is one of the best-advanced methods for controlling seismic vibrations in buildings, bridges and nuclear facilities. A new Friction Multi-Layer Elastomeric Seismic Isolator (FMESI) has been modeled, analyzed and investigated by ABAQUS finite element analysis software and then, compared to real models. A number of friction cores have been used instead of the lead core therefore, some of the previous isolator problems have been almost resolved. Moreover, Studies show that the proposed isolator provides suitable initial stiffness and acceptable hysteresis behavior under different vertical and horizontal loading conditions and also internal stresses in different layers are acceptable. Also, as a result, the initial stiffness and overall area of the curves increase, as friction coefficients of the cores increase, although the frictional coefficients must be within a certain range.
Keywords
seismic isolator; multilayer elastomeric isolator; friction isolators; friction cores;
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