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

Document Type : Research Paper

Authors

1 Associate Professor, Department of Civil Engineering, Faculty of Civil Engineering, Babol Noshirvani University of Technology, Babol, Iran

2 M.Sc. of Structural Engineering Department of Civil Engineering, Faculty of Civil Engineering, Babol Noshirvani University of Technology, Babol, Iran

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

References

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New Approaches in Civil Engineering
Volume 3, Issue 3
February 2020
Pages 61-76

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