Effect of particle shape and fragmentation on the response of particle dampers

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A particle damper (PD) is a device that can attenuate mechanical vibrations thanks to the dissipative collisions between grains contained in a cavity attached to the vibrating structure. It has been recently suggested that, under working conditions in which the damping is optimal, the PD has a unive...

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Autores principales: Sánchez, Martín, Carlevaro, Manuel, Pugnaloni, Luis
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: SAGE Publications 2018
Materias:
Vibration attenuation, particle dampers, passive damping, granular damping, inelastic collapse
Acceso en línea:http://hdl.handle.net/20.500.12272/2803
Aporte de:
RIA - Repositorio Institucional Abierto (UTN) de Universidad Tecnológica Nacional
id I68-R174-20.500.12272-2803
record_format dspace
institution Universidad Tecnológica Nacional
institution_str I-68
repository_str R-174
collection RIA - Repositorio Institucional Abierto (UTN)
language Inglés
topic Vibration attenuation, particle dampers, passive damping, granular damping, inelastic collapse
spellingShingle Vibration attenuation, particle dampers, passive damping, granular damping, inelastic collapse
Sánchez, Martín
Carlevaro, Manuel
Pugnaloni, Luis
Effect of particle shape and fragmentation on the response of particle dampers
topic_facet Vibration attenuation, particle dampers, passive damping, granular damping, inelastic collapse
description A particle damper (PD) is a device that can attenuate mechanical vibrations thanks to the dissipative collisions between grains contained in a cavity attached to the vibrating structure. It has been recently suggested that, under working conditions in which the damping is optimal, the PD has a universal response in the sense that the specific dissipative properties of the grains cease to be important for the design of the device. We present evidence from simulations of PDs containing grains of different sizes, shapes and restitution coefficients, that the universal response is also valid when fragmentation of the grains occurs (generally due to intensive operation of the PD). In contrast, the welding of grains (caused by operation under high temperatures) can take the PD out of the universal response and deteriorate the attenuation. Interestingly, we observed that even at working conditions off the optimal damping, the shape of the grains remains unimportant for the response of the PD.
format Artículo
publishedVersion
Artículo
author Sánchez, Martín
Carlevaro, Manuel
Pugnaloni, Luis
author_facet Sánchez, Martín
Carlevaro, Manuel
Pugnaloni, Luis
author_sort Sánchez, Martín
title Effect of particle shape and fragmentation on the response of particle dampers
title_short Effect of particle shape and fragmentation on the response of particle dampers
title_full Effect of particle shape and fragmentation on the response of particle dampers
title_fullStr Effect of particle shape and fragmentation on the response of particle dampers
title_full_unstemmed Effect of particle shape and fragmentation on the response of particle dampers
title_sort effect of particle shape and fragmentation on the response of particle dampers
publisher SAGE Publications
publishDate 2018
url http://hdl.handle.net/20.500.12272/2803
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AT carlevaromanuel effectofparticleshapeandfragmentationontheresponseofparticledampers
AT pugnaloniluis effectofparticleshapeandfragmentationontheresponseofparticledampers
bdutipo_str Repositorios
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