H. B. Qi, L. J. Zhang, X. Y. Wang, J. Q. Li, R. P. Qiao, J. R. Zhang
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Abstract
The presence of defects, including Stone–Wales (SW) defects, can lead to a deterioration of the mechanical properties of carbon nanotubes (CNTs). In this study, a continuum-discrete multiscale coupling (CDMC) method is used to investigate the improvement of the pressure resistance of defective CNTs containing SW defects. By employing the moving least squares (MLS) approximation as a bridging mechanism, a seamless integration can be achieved between the deformation fields of discrete atomic configurations and their corresponding continuum models. Based on the CDMC method, a meshless computational framework, devoid of numerical integration, is formulated to accurately predict the buckling behaviors of defective CNTs. The results show that the position of SW defects almost has no effect on the anti-buckling ability of defective CNTs; and the pressure resistance of defective CNTs can be improved by coating/inserting CNT when the deference of the radius between the two nested CNTs is greater than 0.2nm.
期刊介绍：
Mechanics of Solids publishes articles in the general areas of dynamics of particles and rigid bodies and the mechanics of deformable solids. The journal has a goal of being a comprehensive record of up-to-the-minute research results. The journal coverage is vibration of discrete and continuous systems; stability and optimization of mechanical systems; automatic control theory; dynamics of multiple body systems; elasticity, viscoelasticity and plasticity; mechanics of composite materials; theory of structures and structural stability; wave propagation and impact of solids; fracture mechanics; micromechanics of solids; mechanics of granular and geological materials; structure-fluid interaction; mechanical behavior of materials; gyroscopes and navigation systems; and nanomechanics. Most of the articles in the journal are theoretical and analytical. They present a blend of basic mechanics theory with analysis of contemporary technological problems.
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