Analysis of micro/nanobridge test based on nonlocal elasticity

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES

卷:49

Article

Fan, CuiYing¹  Zhao, MingHao^1,2  Zhu, YongJie²  Liu, HaiTao²  Zhang, Tong-Yi³ 

[1] Zhengzhou Univ, Sch Mech Engn, Zhengzhou 450001, Henan Province, Peoples R China

[2] Zhengzhou Univ, Dept Engn Mech, Zhengzhou 450001, Henan Province, Peoples R China

[3] Hong Kong Univ Sci & Technol, Dept Mech Engn, Kowloon, Hong Kong, Peoples R China

关键词: Micro/nanobridge;    Nonlocal elasticity;    Timoshenko beam;    Compliant substrate;    Deflection;    Analytical solution;   

DOI  :  10.1016/j.ijsolstr.2012.04.028

来源: Elsevier

【 摘 要 】

Based on the nonlocal Timoshenko beam theory, we develop a mechanics approach to analyze the micro/nanobridge test. This approach considers the shear deformation, the strain gradients, the substrate deformation, and the contact deformation between the indenter bar tip and a tested beam, resulting in an analytic solution of beam deflection versus applied load involving other parameters of material intrinsic length, film residual stress, and cylinder bar radius. The same approach was further developed to analyze the delamination test, giving explicit formulas for the energy release rate and the phase angle. (C) 2012 Elsevier Ltd. All rights reserved.

【 授权许可】

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