A Modified Yoshida-Uemori Constitutive Model and its Application to Cold-Bending in Weldox960

Abstract:

This paper presented a modified Yoshida-Uemori constitutive model to describe the stress-strain responses of tempered sorbite steel under cyclic loading. In this model, a mutational yielding surface and an isotropic hardening surface were defined in stress space and strain space for the description of Bauschinger effects, respectively. Then this model was used to simulate tension-compression tests of Weldox960 steel and study the springback and reduction of thickness in cold-bending. Results obtained from the experiment and simulation show that this modified model is valid in predicting cold-bending forming and springback.

• Periodical: Advanced Materials Research (Volumes 834-836)
• Pages: 407-415
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.834-836.407
• Online since: October 2013
• Authors: Ling Fu, Chuang Hua Deng*, Hui Li Ren, Yi Zhong, Hao Zhou
• Keywords: Bauschinger Effect, Cold-Bending, Springback, Yoshida-Uemori Model

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