A softening-hardening nanomechanics theory for the static and dynamic analyses of nanorods and nanobeams: Doublet mechanics
Küçük Resim Yok
Tarih
2021
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
wiley
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Nanostructures are used as non-traditional materials in engineering, electronics and medical applications. Size-dependent continuum models have been used for the design of the microstructures, such as modified couple stress theory and peridynamics. The length scale parameter in doublet mechanics (DM) is determined by considering the microstructure of the solid. A finite element formulation has been developed for two-dimensional microstructures by using the DM theory. DM theory bridges the lattice dynamics at the nanolength scale and the continuum mechanics at the macroscale limit. The chapter investigates the axial deformation of a clamped-clamped nanorod with the periodic nanostructure model. It deals with axial wave propagation in a nanorod with periodic nanostructures. The bending of a simply supported nanobeam with the periodic nanostructure model is investigated via DM theory. By varying the chiral angle and the length scale parameter in DM, the stiffening and softening of nanorods and nanobeams occur compared to the classical elasticity theory. © ISTE Ltd 2021. Published by ISTE Ltd and John Wiley & Sons, Inc.
Açıklama
Anahtar Kelimeler
Classical Elasticity Theory; Doublet Mechanics; Nanorod Nanostructures; Periodic Nanostructures; Softening Behaviour; Stiffening Behavior
Kaynak
Modern Trends in Structural and Solid Mechanics 2: Vibrations
WoS Q Değeri
Scopus Q Değeri
N/A
