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Wave propagation of coupled double-DWBNNTs conveying fluid-systems using different nonlocal surface piezoelasticity theories.
- Source :
-
Mechanics of Advanced Materials & Structures . 2017, Vol. 24 Issue 14, p1159-1179. 21p. - Publication Year :
- 2017
-
Abstract
- This work is concerned with the size-dependent wave propagation of coupled double-walled boron nitride nanotubes (DWBNNTs) conveying nanoflow-systems based on Timoshenko beam theory. The two DWBNNTs are coupled by an enclosing visco-Pasternak medium. The small-scale effects are captured applying different surface piezoelasticity theories, including stress gradient, strain gradient, and strain inertia gradient. An analytical method is proposed to obtain phase velocity, cut-off, and escape frequencies of the system. Three cases of in-phase wave propagation, out-of-phase wave propagation, and wave propagation with one DWBNNT fixed are considered. Results indicate that ignoring surface and small-scale effects lead to inaccurate results. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15376494
- Volume :
- 24
- Issue :
- 14
- Database :
- Academic Search Index
- Journal :
- Mechanics of Advanced Materials & Structures
- Publication Type :
- Academic Journal
- Accession number :
- 124654182
- Full Text :
- https://doi.org/10.1080/15376494.2016.1227488