Two-surface plasticity Model and Its Application to Spring-back Simulation of Automotive Advanced High Strength Steel Sheets

2011 ◽  
Author(s):  
Taejoon Park ◽  
Dong-Yoon Seok ◽  
Chul-Hwan Lee ◽  
Nobuyasu Noma ◽  
Toshihiko Kuwabara ◽  
...  
Keyword(s):  
High Strength Steel ◽  
High Strength ◽  
Plasticity Model ◽  
Advanced High Strength Steel ◽  
Spring Back ◽  
Surface Plasticity ◽  
Steel Sheets

Application of Gotoh's Orthotropic Yield Function for Modeling Advanced High-Strength Steel Sheets

2016 ◽  
Vol 138 (9) ◽  
Author(s):  
Wei Tong
Keyword(s):  
High Strength Steel ◽  
Biaxial Tension ◽  
High Strength ◽  
Yield Function ◽  
Uniaxial Tensile ◽  
Plasticity Model ◽  
Advanced High Strength Steel ◽  
Directional Dependence ◽  
Steel Sheets ◽  
Tension Loading

An accurate description of the directional dependence of uniaxial tensile yielding and plastic flow in advanced high-strength steel sheets may require either a nonassociated plasticity model with separate quadratic yield function and flow potential or an associated plasticity model with nonquadratic yield function. In this paper, Gotoh's fourth-order homogeneous polynomial yield function is applied to model two advanced high-strength steel sheets in an associated plasticity model. Both the parameter selection for calibrating Gotoh's yield function and its positivity and convexity verification are given in some detail. Similarities and differences between the associated plasticity model presented here and the nonassociated one appeared in the literature are discussed in terms of the directional dependence of yield stresses and plastic strain ratios under uniaxial tension and yield stresses under biaxial tension loading.

scholarly journals Integration process of stamping and welding for DP600 advanced high strength steel sheets

2018 ◽  
Vol 15 ◽  
pp. 684-692
Author(s):  
Baowei Ma ◽  
Dean Meng ◽  
Xi Gu ◽  
Xu Ma ◽  
Dawei Zhang ◽  
...  
Keyword(s):  
High Strength Steel ◽  
High Strength ◽  
Advanced High Strength Steel ◽  
Integration Process ◽  
Steel Sheets
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