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논문 기본 정보

자료유형
학술대회자료
저자정보
Rahul K. Verma (Tata Steel Limited) Satoko Murakoso (Tokyo University of Agriculture and Technology) Kwansoo Chung (Seoul National University) Toshihiko Kuwabara (Tokyo University of Agriculture and Technology)
저널정보
한국소성·가공학회 기타자료 NUMIFORM 2010
발행연도
2010.6
수록면
213 - 220 (8page)

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초록· 키워드

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The constitutive model with combined isotropic-kinematic hardening along with hardening stagnation (or permanent softening) [Verma, Kuwabara, Chung, Haldar: Int. J. Plasticity (submitted)] was used here for modeling the tension-compression behaviors of a 0.1 mm thick austenitic stainless steel sheet (SUS304), which was observed in a recent work [Kuwabara and Murakoso: Proc. CIRP 2010 Conf. (submitted)]. Springback was also experimentally measured for a shallow drawn rectangular cup here and it was verified using the above model. It was found that this model can successfully predict the Bauschinger effect and hardening stagnation. As for springback, it was found that in this particular case it depends on, other than the material model, factors like boundary conditions, in the finite element analysis (FEA), during unloading. It was also observed that incorporation of the Bauschinger effect and permanent softening is a key for accurate springback prediction and, therefore, the present model performs better than the one which is based only on isotropic hardening without any hardening stagnation.

목차

Abstract
INTRODUCTION
CONSTITUTIVE MODELLING
EXPERIMENTAL METHODS
FINITE ELEMENT ALAYSIS
RESULSTS AND DISCUSSION
SUMMARY
REFERENCES

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