Rate-Dependent Material Parameters of the Combined Isotropic/Kinematic Hardening Model for the TRIP980 Steel Sheet

Geun Su Joo; Hoon Huh

doi:10.4028/www.scientific.net/KEM.725.132

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Rate-Dependent Material Parameters of the Combined Isotropic/Kinematic Hardening Model for the TRIP980 Steel Sheet
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 725Rate-Dependent Material Parameters of the Combined...

Rate-Dependent Material Parameters of the Combined Isotropic/Kinematic Hardening Model for the TRIP980 Steel Sheet

Abstract:

This paper is concerned with rate-dependent hardening behaviors of the TRIP980 steel sheet. In sheet metal forming, sheet metals experiences complicated loading at various strain rates. In order to predict deformed shape in sheet metal forming, accurate material properties and an appropriate constitutive model in numerical simulation are important to consider reverse loading and various strain rates simultaneously.This paper deals with rate-dependent material parameters of the isotropic/kinematic hardening model. Tension/compression tests of the TRIP980 steel sheet are performed with a newly developed experimental technique at various strain rates ranging from 0.001 to 100 s⁻¹. Tension/compression hardening curves of the TRIP980 steel sheet are approximated by the Chun et al model at each strain rate condition respectively. From acquired material parameters, rate dependencies of tension/compression hardening behaviors are investigated.

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Advances in Engineering Plasticity and its Application XIII

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Periodical:

Key Engineering Materials (Volume 725)

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132-137

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.725.132

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Online since:

December 2016

Authors:

Geun Su Joo, Hoon Huh*

Keywords:

Combined Isotropic Hardening Model, Combined Kinematic Hardening Model, Compression, Strain Rate, Tension, TRIP980 Steel Sheet

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