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

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, Carlos Manuel, Pugnaloni, Luis Ariel
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2014
Materias:
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/101389
https://ri.conicet.gov.ar/11336/32994
http://journals.sagepub.com/doi/10.1177/1077546313480544
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id I19-R120-10915-101389
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Vibration attenuation
Particle dampers
Passive damping
Granular damping
Inelastic collapse
spellingShingle Física
Vibration attenuation
Particle dampers
Passive damping
Granular damping
Inelastic collapse
Sánchez, Martín
Carlevaro, Carlos Manuel
Pugnaloni, Luis Ariel
Effect of particle shape and fragmentation on the response of particle dampers
topic_facet Física
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 Articulo
Preprint
author Sánchez, Martín
Carlevaro, Carlos Manuel
Pugnaloni, Luis Ariel
author_facet Sánchez, Martín
Carlevaro, Carlos Manuel
Pugnaloni, Luis Ariel
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
publishDate 2014
url http://sedici.unlp.edu.ar/handle/10915/101389
https://ri.conicet.gov.ar/11336/32994
http://journals.sagepub.com/doi/10.1177/1077546313480544
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