A modified strain gradient shell model for vibration analysis of DWCNT conveying viscous fluid including surface effects. Issue 5 (4th May 2022)

• Record Type: Journal Article
• Authors: Ghanbari, Babak; Ghadiri, Majid; SafarPour, Hamed
• Is Part Of: Mechanics based design of structures and machines. Volume 50:Issue 5(2022)
• Page Start: 1506
• Page End: 1536
• Publication Date: 2022-05-04
• Subjects: DWCNT -- modified strain gradient theory -- size effect -- surface effect -- viscous fluid -- viscoelastic foundation; Structural analysis (Engineering) -- Periodicals; Structural design -- Periodicals; 624.17
• DOI: 10.1080/15397734.2020.1753533
• Languages: English
• ISSNs: 1539-7734

Abstract

Abstract: In this article, the vibration analysis of a double-walled carbon nanotube (DWCNT) conveying viscous flow with the aid of modified strain gradient theory has been investigated. The visco-Pasternak model is used to simulate the elastic medium. The force caused by viscous fluid is calculated by modified Navier–Stokes relation. The Gurtin-Murdoch surface elasticity theory has the capability to capture the size-dependent behavior of nanostructures due to the surface stress effect. The governing equations and the boundary conditions have been developed using Hamilton's principle and solved with the aid of generalized differential quadrature (GDQ) methods.