The relationship between plastic zone and contact radius during indentation experiment for strain-hardened materials

In this study, the ratio f of the plastic zone radius, , to the contact radius, , for different material properties and at various indentation depths was investigated using a three-dimensional finite element model for strain hardening materials. The effective indentation radius and f were determined...

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Bibliographic Details
Published in:Philosophical magazine letters 2018-05, Vol.98 (5), p.209-217
Main Authors: Yuan, Zhanwei, Wang, Yu, Tian, Wenbin, Wang, Yingying, Wang, Kai, Li, Fuguo, Guo, Yajie, Hu, Yongbiao, Wang, Xingang
Format: Article
Language:English
Subjects:
average plastic strain
Berkovich indenter
Equivalent indentation radius
Finite element method
finite element simulation
Indentation
Material properties
Modulus of elasticity
Plastics
Poisson's ratio
Strain hardening
Three dimensional models
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Summary:In this study, the ratio f of the plastic zone radius, , to the contact radius, , for different material properties and at various indentation depths was investigated using a three-dimensional finite element model for strain hardening materials. The effective indentation radius and f were determined via the statistical volume of plastic zone. It was found that f is significantly influenced by material properties, such as yield strength, Young's modulus, strain hardening exponent and Poisson's ratio, and less influenced by the indentation depth. A relationship between f and the material properties was proposed.
ISSN:0950-0839
1362-3036
DOI:10.1080/09500839.2018.1524159