The contact problem of an Euler-Bernoulli nano-beam of finite length bonded to a homogeneous elastic half plane is studied in the present work. Both the beam and the half plane are assumed to display a linear elastic behaviour under infinitesimal strains. The analysis is performed under plane strain condition. Owing to the bending stiffness of the beam, shear and peeling stresses arise at the interface between the beam and the substrate within the contact region. The investigation allows to evaluate the role played by the Poisson ratio of the half plane (and, in turn, its compressibility) on the beam-substrate mechanical interaction. Different symmetric as well as skew-symmetric loading conditions for the beam are considered, with particular emphasis to concentrated transversal and horizontal forces and couples acting at its edges. It is found that the Poisson ratio of the half plane affects the behaviour of the interfacial stress field, particularly at the beam edges, where the shear and peel stresses are singular.

Euler-Bernoulli nanobeam welded to a compressible semi-infinite substrate / DI MAIDA, Pietro; Falope, FEDERICO OYEDEJI. - In: MODELLING AND SIMULATION IN ENGINEERING. - ISSN 1687-5591. - 2016:(2016), pp. N/A-N/A. [10.1155/2016/8574129]

Euler-Bernoulli nanobeam welded to a compressible semi-infinite substrate

Di Maida Pietro;Falope Federico Oyedeji
2016

Abstract

The contact problem of an Euler-Bernoulli nano-beam of finite length bonded to a homogeneous elastic half plane is studied in the present work. Both the beam and the half plane are assumed to display a linear elastic behaviour under infinitesimal strains. The analysis is performed under plane strain condition. Owing to the bending stiffness of the beam, shear and peeling stresses arise at the interface between the beam and the substrate within the contact region. The investigation allows to evaluate the role played by the Poisson ratio of the half plane (and, in turn, its compressibility) on the beam-substrate mechanical interaction. Different symmetric as well as skew-symmetric loading conditions for the beam are considered, with particular emphasis to concentrated transversal and horizontal forces and couples acting at its edges. It is found that the Poisson ratio of the half plane affects the behaviour of the interfacial stress field, particularly at the beam edges, where the shear and peel stresses are singular.
2016
N/A
N/A
Euler-Bernoulli nanobeam welded to a compressible semi-infinite substrate / DI MAIDA, Pietro; Falope, FEDERICO OYEDEJI. - In: MODELLING AND SIMULATION IN ENGINEERING. - ISSN 1687-5591. - 2016:(2016), pp. N/A-N/A. [10.1155/2016/8574129]
DI MAIDA, Pietro; Falope, FEDERICO OYEDEJI
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1285688
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