PSI - Issue 32

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2021) 000 – 000

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ScienceDirect

Procedia Structural Integrity 32 (2021) 158–165

XXIIth Winter School on Continuous Media Mechanics Control of damping of structural vibrations by using different mechanisms of energy dissipation

Oshmarin D.A. a *, Iurlova N.A. a , Sevodina N.V. a , Iurlov M.A. a a Institute of Continuous Media Mechanics UB RAS, 1, Akademika Koroleva Str.,Perm, 614013, Russia

© 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the XXIIth Winter School on Continuous Media Mechanics” Abstract In current paper an influence of adding piezoelectric elements and connection of their electrodes to external resistive electric circuits on coefficients of vibration damping of piecewise-homogeneous viscoelastic structures was demonstrated on the example of a cantilever plate. The calculations were carried for two options of location of piezoelectric elements in relation to the plate (in the middle of the plate and nearby the clamped edge) and two options of mutual arrangement of a piezoelectric element and a viscoelastic layer (at one side of the plate and at opposite sides). One was demonstrated that damping coefficients for the first two the most energy-intensive vibration modes can be increased in different degree by using different mechanisms of energy dissipation. In this case the most preferable configuration for reaching the highest value of vibration damping coefficients is the option when piezoelectric element and viscoelastic layer located at opposite sides of the plate. © 2021 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license ( https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer- review under responsibility of the scientific committee of the XXIIth Winter School on Continuous Media Mechanics” Keywords: viscoelasticity; piezoelectric element; external electrical circuits; damping of vibration 1. Introduction Resonant modes of vibrations are dominant in response of mechanical structures on a dynamic impact. Differentapproaches are used to damp vibrations at these modes. Attachingmechanicaldampeners, coating (complete or partial) a structure with layer made of a viscoelastic material (polymers, rubber, etc.) or forming an internal

* Corresponding author. Tel.: +7(342)-237-83-08; fax: +7(342)-237-84-87. E-mail address: oshmarin@icmm.ru

2452-3216 © 2021 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license ( https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer-review under responsibility of the scientific committee of the XXIIth Winter School on Continuous Media Mechanics ”

2452-3216 © 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the XXIIth Winter School on Continuous Media Mechanics” 10.1016/j.prostr.2021.09.023