期刊
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
卷 28, 期 15, 页码 1523-1536出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/15376494.2019.1683660
关键词
Timoshenko elastic nano-beams; size effects; nonlocal integral theory; analytical modeling; CNT; reduced Young modulus
类别
资金
- Italian Ministry for University and Research (P.R.I.N. National Grant 2017) [2017J4EAYB]
- Italian Ministry for University and Research (University of Naples Federico II Research Unit)
In the study of carbon nanotubes (CNTs), a nonlocal strain gradient approach was used to model CNTs and predict their reduced Young elastic modulus, which was validated through molecular dynamics simulations.
Carbon nanotubes (CNTs) are principal constituents of nanocomposites and nano-systems. CNT size-dependent response assessment is therefore a topic of current interest in Mechanics of Advanced Materials and Structures. CNTs are modeled here by a variationally consistent nonlocal strain gradient approach for Timoshenko nano-beams, extending the treatment in [Int. J. Eng. Science 143 (2019) 73-91] confined to slender structures. Scale effects are described by integral convolutions, conveniently replaced with differential and boundary nonlocal laws. The theoretical predictions, exploited to analytically estimate the reduced Young elastic modulus of CNTs, are validated by molecular dynamics simulations.
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