Effect of the Casimir Force on Buckling of a Double-Nanowire System with Surface Effects

Author:

Zou J.1,Li X.-F.12

Affiliation:

1. School of Civil Engineering, Central South University, Changsha 410075, P. R. China

2. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, P. R. China

Abstract

Structural stability of a double-nanowire system with surface effects subjected to axial compressive forces is analyzed. Taking into account the Casimir force between the two nanowires, two coupled governing equations for buckling of a double-nanowire system are derived. For four typical end supports including simply-supported, clamped, cantilevered, and clamped-pinned double-nanowire systems, the characteristic equations are derived and the critical loads are determined for the out-of-phase in-plane buckling. Numerical results indicate that positive surface elasticity enhances the load-carrying capacity of the nanowires, and the reverse is also true. The Casimir force and residual surface tension always increase the critical loads.

Publisher

World Scientific Pub Co Pte Lt

Subject

Applied Mathematics,Mechanical Engineering,Ocean Engineering,Aerospace Engineering,Building and Construction,Civil and Structural Engineering

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