Hole expansion forming analysis of mild steel sheet using a material model based on crystal plasticity

2019 ◽  
Author(s):  
Tomoyuki Hakoyama ◽  
Sam Coppieters ◽  
Toshihiko Kuwabara
Keyword(s):  
Mild Steel ◽  
Crystal Plasticity ◽  
Steel Sheet ◽  
Material Model ◽  
Hole Expansion ◽  
Model Based ◽  
Forming Analysis

scholarly journals Numerical simulation of blanking process

2018 ◽  
Vol 157 ◽  
pp. 02038
Author(s):  
Peter Pecháč ◽  
Milan Sága
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Steel Sheet ◽  
Plastic Material ◽  
Material Model ◽  
Rolled Steel ◽  
Finite Element Software ◽  
History Of ◽  
Cold Rolled ◽  
Blanking Process

This paper presents numerical simulation of blanking process for cold-rolled steel sheet metal. The problem was modeled using axial symmetry in commercial finite element software ADINA. Data obtained by experimental measurement were used to create multi-linear plastic material model for simulation. History of blanking force vs. tool displacement was obtained.

Anisotropic Plastic Behavior of TRIP 780 Steel Sheet in Hole Expansion Test

2012 ◽  
Vol 504-506 ◽  
pp. 89-94 ◽  
Author(s):  
Sansot Panich ◽  
Vitoon Uthaisangsuk ◽  
Surasak Suranuntchai ◽  
Suwat Jirathearanat
Keyword(s):  
Steel Sheet ◽  
Flow Behavior ◽  
Plastic Anisotropy ◽  
Yield Potential ◽  
Uniaxial Tensile ◽  
Plastic Behavior ◽  
Biaxial Test ◽  
Hole Expansion ◽  
Expansion Test ◽  
Hole Expansion Test

Plastic behavior of advanced high strength steel sheet of grade TRIP780 (Transformation Induced Plasticity) was investigated using three different yield functions, namely, the von Mises’s isotropic, Hill’s anisotropic (Hill’48), and Barlat’s anisotropic (Yld2000-2d) criterion. Uniaxial tensile and balanced biaxial test were conducted for the examined steel in order to characterize flow behavior and plastic anisotropy in different stress states. Additionally, disk compression test was performed for obtaining the balanced r-value. According to the different yield criteria, yield stresses and r-values were calculated for different directions and then compared with experimental data. To verify the modeling accuracy, a hole expansion test was carried out experimentally and numerically by FE simulation. Stress-strain curve from the biaxial test was described using voce and swift hardening models. Punch load and stroke, final hole radius, and strain distribution on specimen surface along the hole circumference and the specimen diameter in rolling and transverse directions were determined and compared with the experimental results. It was found that the simulations applying Yld2000-2d yield function provided an acceptable agreement. Consequently, it is noted that the anisotropic yield potential significantly affects the accuracy of the predicted deformation behavior of sheet metal subjected to hole expanding load.

Performance of 6 mm Mild Steel Sheet Laser Cutting

2014 ◽  
Vol 51 (4) ◽  
pp. 040601
Author(s):  
徐国建 Xu Guojianm ◽  
李宏利 Li Hongli ◽  
杭争翔 Hang Zhengxiang ◽  
刘祥宇 Liu Xiangyu ◽  
沓名宗春 Kutsuan Muneharu
Keyword(s):  
Mild Steel ◽  
Laser Cutting ◽  
Steel Sheet

scholarly journals Effect of Anisotropic Yield Functions on the Accuracy of Hole Expansion Simulations for 590 MPa Grade Steel Sheet

2010 ◽  
Vol 96 (9) ◽  
pp. 557-563 ◽  
Author(s):  
Kazuma Hashimoto ◽  
Toshihiko Kuwabara ◽  
Eiji Iizuka ◽  
Jeong-Whan Yoon
Keyword(s):  
Steel Sheet ◽  
Hole Expansion ◽  
Yield Functions ◽  
Grade Steel

Hole expansion of advanced high strenth steel sheet sample

2010 ◽  
Vol 3 (S1) ◽  
pp. 247-250 ◽  
Author(s):  
L. Xu ◽  
L. Chen ◽  
B. C. De Cooman ◽  
D. Steglich ◽  
F. Barlat
Keyword(s):  
Steel Sheet ◽  
Hole Expansion ◽  
Sheet Sample
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