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Fracture Properties of Surface Modification Layers Via a Modified Bi-Layer Beam Model

Published online by Cambridge University Press:  27 December 2018

H. T. Liu ,
M. H. Zhao  and
J. W. Zhang
H. T. Liu
Affiliation:
School of Mechanics and Engineering Science Henan, China
M. H. Zhao*
Affiliation:
School of Mechanics and Engineering Science Henan, China Henan Key Engineering Laboratory for Anti-Fatigue Manufacturing Technology School of Mechanical Engineering Henan, China
J. W. Zhang*
Affiliation:
School of Mechanics and Engineering Science Henan, China
*
* Corresponding author memhzhao@zzu.edu.cn, memhzhao@sina.com; zhangjianwei@zzu.edu.cn
* Corresponding author memhzhao@zzu.edu.cn, memhzhao@sina.com; zhangjianwei@zzu.edu.cn
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Abstract

A modified bi-layer beam model is proposed to study the fracture-dominated scratch process of the brittle material with surface modification layer considering residual stress. The nonlinear analytical solution of the energy release rate is derived considering the graded distribution of the elastic modulus and residual stress. Finite element analysis is also conducted. Both analytical and numerical results show that the graded distribution of the material properties and residual stress plays an important role in the fracture process. Based on the inverse analysis, the proposed model could provide a convenient way to determine the energy release rate of materials possessing a surface modification layer.

Keywords

Bi-layer beam modelSurface modification layerScratchEnergy release rate
Type
Research Article
Information
Journal of Mechanics , Volume 35 , Issue 4 , August 2019 , pp. 499 - 511
Copyright
© The Society of Theoretical and Applied Mechanics 2018 

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References

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