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Identification of the elastic–plastic constitutive model for measuring mechanical properties of metals by instrumented spherical indentation test

Published online by Cambridge University Press:  08 May 2017

Taihua Zhang ,
Chang Yu ,
Guangjian Peng  and
Yihui Feng
Taihua Zhang*
Affiliation:
Institute of Micro/Nanomechanical Testing Technology and Application, College of Mechanical Engineering, Zhejiang University of Technology, No. 18 Chaowang Road, Hangzhou 310014, China
Chang Yu
Affiliation:
State Key Laboratory of Nonlinear Mechanics (LNM), Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
Guangjian Peng
Affiliation:
Institute of Micro/Nanomechanical Testing Technology and Application, College of Mechanical Engineering, Zhejiang University of Technology, No. 18 Chaowang Road, Hangzhou 310014, China
Yihui Feng
Affiliation:
State Key Laboratory of Nonlinear Mechanics (LNM), Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
*
Address all Correspondence to Taihua Zhang at zhangth@zjut.edu.cn
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Abstract

Several methods for determination of elastic–plastic parameters by instrumented spherical indentation tests have been presented in the past few years. Each method was established according to a specific constitutive model. Identification of the constitutive models of new materials has become an indispensable step in order to choose an appropriate indentation method to extract the elastic–plastic parameters. In the present work, the half depth energy accumulation rate and Meyer's index were related to the elastic–plastic constitutive models via qualitative and numerical analyses. A method for identification of the elastic–plastic constitutive models by instrumented spherical indentation test was proposed.

Type
Research Letters
Information
MRS Communications , Volume 7 , Issue 2 , June 2017 , pp. 221 - 228
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Copyright
Copyright © Materials Research Society 2017 

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