Dynamics of nano beams with attached masses randomly distributed

In this paper we analyze the dynamic behavior of micro/nano beams with attached masses distributed in a random field. A model of shear deformable micro beam is employed as the basis for deterministic calculations that are carried out in the context of the finite element method. The deterministic mod...

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Autores principales: Piovan, Marcelo T., Da Rosa, María Anna, Lippiello, Maria
Formato: Objeto de conferencia Resumen
Lenguaje:Inglés
Publicado: 2017
Materias:
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/103823
https://cimec.org.ar/ojs/index.php/mc/article/view/5342
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id I19-R120-10915-103823
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ingeniería
Micro/nano beams
FOST
Nonlocal elasticity
Frequency analysis
spellingShingle Ingeniería
Micro/nano beams
FOST
Nonlocal elasticity
Frequency analysis
Piovan, Marcelo T.
Da Rosa, María Anna
Lippiello, Maria
Dynamics of nano beams with attached masses randomly distributed
topic_facet Ingeniería
Micro/nano beams
FOST
Nonlocal elasticity
Frequency analysis
description In this paper we analyze the dynamic behavior of micro/nano beams with attached masses distributed in a random field. A model of shear deformable micro beam is employed as the basis for deterministic calculations that are carried out in the context of the finite element method. The deterministic model is developed under the frame of non-local elasticity. Attached masses modify the vibratory pattern of unloaded nano-beams, and by the way conveying the possibility to detect alterations (this is the way in which nano-sensors can detect the presence of biomolecules or other nano-particles). The variability of mass and/or the stiffness properties of the nano- beam are assumed as random parameters or random fields taking into account the elastic coupling between bending and shear in the contexts of non-local approaches. The probabilistic model is constructed, under the basis of a first-order-shear-deformation (FOST) beam theory, appealing to the Maximum Entropy Principle in order to derive the probability density functions, according to increasing levels of entropy (i.e. with less number of constraints or less information). The analysis is performed in the frequency domain by comparing the probabilistic models with different levels of information (i.e., given the mean and/or the bounds, etc.) with previously developed probabilistic approaches such as the ones with parametric uncertainty.
format Objeto de conferencia
Resumen
author Piovan, Marcelo T.
Da Rosa, María Anna
Lippiello, Maria
author_facet Piovan, Marcelo T.
Da Rosa, María Anna
Lippiello, Maria
author_sort Piovan, Marcelo T.
title Dynamics of nano beams with attached masses randomly distributed
title_short Dynamics of nano beams with attached masses randomly distributed
title_full Dynamics of nano beams with attached masses randomly distributed
title_fullStr Dynamics of nano beams with attached masses randomly distributed
title_full_unstemmed Dynamics of nano beams with attached masses randomly distributed
title_sort dynamics of nano beams with attached masses randomly distributed
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/103823
https://cimec.org.ar/ojs/index.php/mc/article/view/5342
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