Identification of Kinematic Hardening Material Parameters for Martensitic Steel Sheets

The identification of the material models which are used in the finite element analysis for the forming operation and springback are very important in terms of accurate predictions. The aim of this paper is to characterize both the anisotropy and the hardening of the ultra-high strength steel such a...

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Published inMaterials Science Forum Vol. 866; pp. 186 - 190
Main Authors Choi, W.H., Kim, H.Y., Song, Jung Han, Park, J.S., Lee, C.A.
Format Journal Article
LanguageEnglish
Published Pfaffikon Trans Tech Publications Ltd 11.08.2016
Subjects
Advanced manufacturing technologies
Anisotropy
Civil engineering
Hardening
High strength steel
Kinematics
Load
Martensitic stainless steels
Materials science
Mathematical models
Mechanical properties
Metal forming
Parameter identification
Parameters
Steel
Steels
Tensile strength
Yield stress
Kinematic Hardening
Martensitic Steel Sheet
Cyclic Tension-Compression Test
Yoshida-Uemori Model
Bauschinger Effect
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Summary:The identification of the material models which are used in the finite element analysis for the forming operation and springback are very important in terms of accurate predictions. The aim of this paper is to characterize both the anisotropy and the hardening of the ultra-high strength steel such as martensitic steel (MS steel) in order to identify material parameters of constitutive equation, which able to reproduce the mechanical behavior. Uniaxial tensile tests were carried out for characterizing the anisotropic plastic behavior of the MS steel. Cyclic tests under tension-compression load were also carried out for characterizing the Bauschinger effect during reverse deformation. Yoshida-Uemori hardening model associated with orthotropic yield criterion Hill’s 1948 is used to represent the in-plane mechanical behavior of the martensitic steel. The resented results show a very good agreement between model predictions and experiments: flow stresses during loading and reverse loading are well reproduced.
Bibliography:Selected, peer reviewed papers from 2016 the First International Conference on Civil Engineering and Materials Science, May 1-3, 2016, Singapore, Singapore
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ISBN:3038357480
9783038357483
ISSN:0255-5476
1662-9752
1662-9752
DOI:10.4028/www.scientific.net/MSF.866.186