The present report concerns a friction damper constructed with coned disc springs as a part of laminated rubber bearings for base-isolation systems. This friction damper is constructed by keeping coned disc springs against a horizontally placed stainless steel plate on the sliding surface by making use of the rebound from deformation by vertical compression. The examination of non-linear load-deflection curves of the coned disc springs were undertaken by both characteristics tests and analysis. Through dynamic characteristics tests, the reliability of friction dampers constructed with the coned disc spring was confirmed as applicable to a base isolation system.
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