Flutter and dissipation instabilities in structures subject to friction follower forces

Bigoni, Davide, Kirillov, Oleg, Misseroni, Diego, Noselli, Giovanni and Tommasini, Mirko (2016) Flutter and dissipation instabilities in structures subject to friction follower forces. In: 24th International Congress of Theoretical and Applied Mechanics (ICTAM2016), 21st-26th August 2016, Montreal, Canada.

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Abstract

Flutter and divergence instabilities are theoretically and experimentally analyzed in elastic structures with internal and external
damping. Despite of the fact that only the former (and not the latter) was believed to be a destabilizing effect, it is theoretically demonstrated
that the external damping plays a role similar to internal damping, so that both yield a pronounced destabilization paradox (in the Ziegler sense).
This finding and other features of the Beck and Pflueger columns are substantiated by an experimental campaign in which the follower forces
are obtained via dry friction with a newly designed experimental apparatus.

Item Type: Conference or Workshop Item (Paper)
Subjects: F300 Physics
H300 Mechanical Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Related URLs:
Depositing User: Oleg Kirillov
Date Deposited: 10 May 2017 08:57
Last Modified: 21 Nov 2017 06:40
URI: http://nrl.northumbria.ac.uk/id/eprint/30728

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