Mechanical Properties of Super Honeycomb Structures

M. Wang, X. Qiu () and X. Zhang
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M. Wang: Tsinghua University, Department of Engineering Mechanics
X. Qiu: Tsinghua University, Department of Engineering Mechanics
X. Zhang: Tsinghua University, Department of Engineering Mechanics

A chapter in Computational Mechanics, 2007, pp 275-275 from Springer

Abstract: Abstract Formed by repeating carbon nanotube Y-branched junctions in a plane, super honeycomb structures have been proposed recently, also termed as super graphite. One can even go further, and roll up super graphite sheets into a super nanotube. Using the shell model and material parameters obtained from molecular dynamics method, the mechanical properties of super structures are examined by finite element calculations. Like fishnet, a remarkable change of angles between arms occurs before the arms are stretched, and finally results in a high value of tensile modulus. Moreover, the results indicated that carbon nanotubes arranged in a hexagonal lattice can distribute and transfer mechanical stress in a way that single or bundled nanotubes cannot. High-order super tube can be constructed by the same way, which means the arms of (k+1)th super tube is k th one. The relationship of material properties between arms and super tube are derived from beam theory, which is applicable to any order super tubes. The analytical results are also verified by FE simulations. The super structures are found to have great potential applications in electronics device or reinforced composite material.

Keywords: Shell Model; Beam Theory; Remarkable Change; Hexagonal Lattice; Computational Mechanics (search for similar items in EconPapers)
Date: 2007
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DOI: 10.1007/978-3-540-75999-7_75

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