Longitudinal wave propagation in nanorods using a general nonlocal unimodal rod theory and calibration of nonlocal parameter with lattice dynamics
Küçük Resim Yok
Tarih
2012
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Pergamon-Elsevier Science Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In the present study, longitudinal wave propagation in nanorods is studied using nonlocal elasticity theory. The nonlocal constitutive equations of Eringen are used in the formulations. A unified rod theory including lateral inertia, shear and surface stress effects which gives the previous theories as a special case is adopted in the formulation of the displacement field. A modification is proposed to Eringen's nonlocal parameter e(0) by obtaining an explicit relation for it. The nonlocal parameter is calibrated using lattice dynamics. It is obtained that the nonlocal parameter is material and geometry dependent. Considering lateral inertia and surface effects improves longitudinal wave characteristics of nanorods. (C) 2012 Elsevier Ltd. All rights reserved.
Açıklama
Anahtar Kelimeler
Nonlocal Elastic Rod Model, Wave Propagation, Unimodal Theories, Walled Carbon Nanotubes, Continuum-Mechanics, Shear Deformation, Vibration, Elasticity, Models, Strain, Beams, Tubes
Kaynak
International Journal Of Engineering Science
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
56
