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Thermal Buckling Behavior of Nanobeams Using an Efficient Higher-Order Nonlocal Beam Theory.
- Source :
-
Journal of Nanomechanics & Micromechanics . Sep2013, Vol. 3 Issue 3, p37-42. 6p. - Publication Year :
- 2013
-
Abstract
- This paper presents an efficient higher-order nonlocal beam theory for the thermal buckling of nanobeams. The displacement field is chosen based on assumptions that the in-plane and transverse displacements consist of bending and shear components, and the shear components of in-plane displacements give rise to the parabolic variation of shear strain through the thickness in such a way that shear stress vanishes on the nanobeam surfaces. Therefore, there is no need to use a shear correction factor. The present model is capable of capturing both the small-scale effect and transverse shear deformation effects of nanobeams, and it has strong similarities with the nonlocal Euler-Bernoulli beam theory in aspects such as equations of motion, boundary conditions, and stress resultant expressions. Using the nonlinear strain-displacement relations, the equilibrium and stability equations of nanobeams are derived. The theoretical development presented herein may serve as a reference for nonlocal theories as applied to the instability analysis of a complex nanobeam system such as a complex carbon nanotube system. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 21535434
- Volume :
- 3
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Journal of Nanomechanics & Micromechanics
- Publication Type :
- Academic Journal
- Accession number :
- 89720582
- Full Text :
- https://doi.org/10.1061/(ASCE)NM.2153-5477.0000057