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Analytical approach for predicting vibration characteristics of an embedded elastic sphere in complex fluid

Article dans une revue avec comité de lecture
Author
ccYANG, Xi
211916 Laboratoire Angevin de Mécanique, Procédés et InnovAtion [LAMPA]
ccEL BAROUDI, Adil
211916 Laboratoire Angevin de Mécanique, Procédés et InnovAtion [LAMPA]
ccLE POMMELLEC, Jean Yves
211916 Laboratoire Angevin de Mécanique, Procédés et InnovAtion [LAMPA]

URI
http://hdl.handle.net/10985/23242
DOI
10.1007/s00419-020-01674-7
Date
2020-02-11
Journal
Archive of Applied Mechanics

Abstract

Vibration characteristics of elastic nanostructures embedded in fluid medium have been used for biological and mechanical sensing, and also to investigate the materials mechanical properties. The fluid medium surrounding the nanostructure is typically modeled as a Newtonian fluid. A novel approach based on the exact theory has been developed in this paper, to accurately predict the various vibration scenarios of an elastic sphere, in a compressible viscous fluid. Then the analysis is extended to a viscoelastic medium using the Maxwell fluid model. To demonstrate the accuracy of the present approach, a comparison is made with the published theoretical results in the literature in some particular cases, which shows a very good agreement. The effects of fluid compressibility and viscoelasticity are discussed in details and we demonstrate that the fluid compressibility plays a signi cant role in the vibration modes of an elastic sphere. Results also show that the different vibration modes of a sphere triggers a viscoelastic response in water-glycerol mixtures similar to that of literature. In addition, the obtained results can serve as benchmark solution in design of liquid sensors.

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