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

Zhanwei Yuan; Yu Wang; Wenbin Tian; Yingying Wang; Kai Wang; Fuguo Li; Yajie Guo; Yongbiao Hu; Xingang Wang

doi:10.1080/09500839.2018.1524159

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

Zhanwei Yuan, Yu Wang, Wenbin Tian, Yingying Wang, Kai Wang, Fuguo Li, Yajie Guo, Yongbiao Hu, Xingang Wang

School of Materials Sience and Engineering

Chang'an University

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

In this study, the ratio f of the plastic zone radius, a_PZ, to the contact radius, a_c, 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.

Original language	English
Pages (from-to)	209-217
Number of pages	9
Journal	Philosophical Magazine Letters
Volume	98
Issue number	5
DOIs	https://doi.org/10.1080/09500839.2018.1524159
State	Published - 4 May 2018

Keywords

average plastic strain
Berkovich indenter
Equivalent indentation radius
finite element simulation

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10.1080/09500839.2018.1524159

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abstract = "In this study, the ratio f of the plastic zone radius, aPZ, to the contact radius, ac, 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{\textquoteright}s modulus, strain hardening exponent and Poisson{\textquoteright}s ratio, and less influenced by the indentation depth. A relationship between f and the material properties was proposed.",

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AU - Yuan, Zhanwei

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AU - Tian, Wenbin

AU - Wang, Yingying

AU - Wang, Kai

AU - Li, Fuguo

AU - Guo, Yajie

AU - Hu, Yongbiao

AU - Wang, Xingang

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AB - In this study, the ratio f of the plastic zone radius, aPZ, to the contact radius, ac, 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.

KW - average plastic strain

KW - Berkovich indenter

KW - Equivalent indentation radius

KW - finite element simulation

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

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