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Viscoelastically coupled dynamics of FG Timoshenko microbeams.
- Source :
-
Microsystem Technologies . Feb2019, Vol. 25 Issue 2, p651-663. 13p. - Publication Year :
- 2019
-
Abstract
- Viscosity effects on the mechanical behaviour of functionally graded (FG) Timoshenko microbeams are investigated; the model possesses both linear nonlinear viscous terms. The Mori-Tanaka homogenisation method is used for the continuous variations of the material properties of the microsystem along the thickness; the Kelvin-Voigt scheme is employed for the internal damping; the shear deformation and rotary inertia are modelled for the viscoelastic microbeam via the Timoshenko theory; the modified couple stress theory is used for size influences. An energy loss/balance via Hamilton's principle is used for obtaining the equations of motion. Galerkin's approach together with a continuation method is employed for the mechanical responses. The simultaneous effects of viscosity, being small, and FG materials on the mechanical behaviour are investigated. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09467076
- Volume :
- 25
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Microsystem Technologies
- Publication Type :
- Academic Journal
- Accession number :
- 134434875
- Full Text :
- https://doi.org/10.1007/s00542-018-4002-3