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The optimum design of a base isolation system with frictional elements
Author(s) -
Constantinou Michalakis C.,
Tadjbakhsh Iradj G.
Publication year - 1984
Publication title -
earthquake engineering and structural dynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.218
H-Index - 127
eISSN - 1096-9845
pISSN - 0098-8847
DOI - 10.1002/eqe.4290120205
Subject(s) - base isolation , structural engineering , white noise , vibration isolation , base (topology) , acceleration , natural rubber , isolation (microbiology) , engineering , vibration , ground motion , seismic isolation , control theory (sociology) , computer science , mathematics , mechanical engineering , acoustics , mathematical analysis , materials science , physics , classical mechanics , telecommunications , microbiology and biotechnology , control (management) , frame (networking) , composite material , artificial intelligence , biology
A linear multistorey structure with a seismic base isolation system consisting of rubber bearings and frictional elements is considered. The non‐linear equations of motion are derived for the first mode vibration and the stochastic response to a white noise ground acceleration is determined. Based on this response, suitable objective functions are defined and the optimum design of the isolation system is performed. It is shown that a small amount offriction increases the effectiveness of the system compared with the same system but without frictional elements.