SIZE-DEPENDENT ELASTIC MODULUS AND FRACTURE TOUGHNESS OF THE NANOFILM WITH SURFACE EFFECTS

Jian-Gang Guo, Li-Jun Zhou and Ya-Pu Zhao ()
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Jian-Gang Guo: Department of Mechanics, Tianjin University, Tianjin 300072, China
Li-Jun Zhou: Department of Mechanical Engineering, Tianjin University of Technology and Education, Tianjin 300222, China
Ya-Pu Zhao: State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China

Surface Review and Letters (SRL), 2008, vol. 15, issue 05, 599-603

Abstract: The effective elastic modulus and fracture toughness of the nanofilm were derived with the surface relaxation and the surface energy taken into consideration by means of the interatomic potential of an ideal crystal. The size effects of the effective elastic modulus and fracture toughness were discussed when the thickness of the nanofilm was reduced. And the dependence of the size effects on the surface relaxation and surface energy was also analyzed.

Keywords: Size-dependent; surface effects; elastic modulus; fracture toughness; nanofilm; 62.20.Dc; 68.35.-p; 68.60.-p; 68.60.Bs (search for similar items in EconPapers)
Date: 2008
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DOI: 10.1142/S0218625X08011901

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