Article
Version 1
Preserved in Portico This version is not peer-reviewed
Prototype Test on Resilient Friction Materials for Seismic Dampers
Version 1
: Received: 3 November 2023 / Approved: 3 November 2023 / Online: 3 November 2023 (15:14:20 CET)
A peer-reviewed article of this Preprint also exists.
Francavilla, A.B.; Latour, M.; Rizzano, G. Prototype Test of Resilient Friction Materials for Seismic Dampers. Materials 2023, 16, 7336. Francavilla, A.B.; Latour, M.; Rizzano, G. Prototype Test of Resilient Friction Materials for Seismic Dampers. Materials 2023, 16, 7336.
Abstract
In recent decades, low-yielding seismic devices based on the use of friction dampers have emerged as an excellent solution for the development of building structures with improved reparability and resilience. Achieving an optimal design for such low-yielding seismic devices requires precise control of bolt preloading levels and predictability of the friction coefficient (CoF) between the damper interfaces. While various types of friction devices exist, capable of providing significant energy dissipation, ongoing research is focused on the development of novel friction materials that exhibit a stable hysteretic response, high CoF values, minimal differences between static and dynamic CoF, and predictable slip resistance. In this context, an experimental campaign was conducted at the STRENGTH Laboratory of the University of Salerno to evaluate the behaviour of new friction shims employing specially developed metal alloys. Specifically, the influence of the characteristics of the contact surfaces in the sliding area on the behaviour and performance of the friction device was analysed. The tests followed the loading protocol recommended by EN12159 for seismic device qualification. Monitored parameters included preloading force values and the evolution of slip resistance. The friction value was determined, along with its degradation over time. Finally, the material's performance in terms of hysteretic behaviour was assessed, providing a comparison of the tested specimens in terms of slip force degradation and energy dissipation capacity.
Keywords
Intermetallics; friction resistance; devices; damping; mechanical testing
Subject
Engineering, Civil Engineering
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Comments (0)
We encourage comments and feedback from a broad range of readers. See criteria for comments and our Diversity statement.
Leave a public commentSend a private comment to the author(s)
* All users must log in before leaving a comment
