An application of fully coupled ductile damage model considering induced anisotropies on springback prediction of advanced high strength steel materials

2020 ◽  
Author(s):  
M. Yetna N’jock ◽  
H. Badreddine ◽  
C. Labergere ◽  
Z. Yue ◽  
K. Saanouni ◽  
...  
Keyword(s):  
High Strength Steel ◽  
Damage Model ◽  
High Strength ◽  
Ductile Damage ◽  
Advanced High Strength Steel ◽  
Springback Prediction ◽  
Fully Coupled

Advanced High Strength Steel Sheet Forming and Springback Simulation

2010 ◽  
Vol 97-101 ◽  
pp. 200-203 ◽  
Author(s):  
Ke Chen ◽  
Jian Ping Lin ◽  
Mao Kang Lv ◽  
Li Ying Wang
Keyword(s):  
High Strength Steel ◽  
Yield Criterion ◽  
Kinematic Hardening ◽  
Sheet Material ◽  
High Strength ◽  
Material Model ◽  
Sheet Forming ◽  
Isotropic Hardening ◽  
Advanced High Strength Steel ◽  
Springback Prediction

With the increasing use of finite element analysis method in sheet forming simulations, springback predictions of advanced high strength steel (AHSS) sheet are still far from satisfactory precision. The main purpose of this paper was to provide a method for accurate springback prediction of AHSS sheet. Material model with Hill’48 anisotropic yield criterion and nonlinear isotropic/kinematic hardening rule were applied to take account the anisotropic yield behavior and the Bauschinger effect during forming processes. U-channel forming and springback simulation was performed using ABAQUS software. High strength DP600 sheet was investigated in this work. The simulation results obtained with the proposed material model agree well with the experimental results, which show a remarkable improvement of springback prediction compared with the commonly used isotropic hardening model.

Evaluation of Charpy Impact Test Performance for Advanced High-Strength Steel Sheets Based on a Damage Model

2010 ◽  
Vol 3 (S1) ◽  
pp. 183-186 ◽  
Author(s):  
Ning Ma ◽  
Taejoon Park ◽  
Dongun Kim ◽  
Dong-Yoon Seok ◽  
Chongmin Kim ◽  
...  
Keyword(s):  
Test Performance ◽  
High Strength Steel ◽  
Impact Test ◽  
Damage Model ◽  
Charpy Impact ◽  
High Strength ◽  
Charpy Impact Test ◽  
Advanced High Strength Steel ◽  
Steel Sheets

A modified damage model for advanced high strength steel sheets

2011 ◽  
Vol 27 (10) ◽  
pp. 1485-1511 ◽  
Author(s):  
Kwansoo Chung ◽  
Ning Ma ◽  
Taejoon Park ◽  
Dongun Kim ◽  
Donghoon Yoo ◽  
...  
Keyword(s):  
High Strength Steel ◽  
Damage Model ◽  
High Strength ◽  
Advanced High Strength Steel ◽  
Steel Sheets

Finite Element Analysis of Reinforcement Rocker Part Made from JAC780Y Steel Sheets

2021 ◽  
Vol 877 ◽  
pp. 83-89
Author(s):  
Aeksuwat Nakwattanaset ◽  
Surasak Suranuntchai
Keyword(s):  
Finite Element ◽  
Sheet Metal ◽  
High Strength Steel ◽  
High Strength ◽  
Material Model ◽  
Advanced High Strength Steel ◽  
Forming Process ◽  
Element Analysis ◽  
Steel Sheets ◽  
Springback Prediction

The manufacturing industries for automotive parts aim to develop technologies for reducing vehicle weight in order to decrease fuel consumption. However, passive safety function for drivers and passengers must not be impaired or should be even improved. Therefore, advanced high strength steel sheet plays more and more important role in designing automotive components. Nowadays, prediction of formability for sheet metal stamping has high capability more than the past. The major challenge is springback prediction. Moreover, it assists in the tooling design to correctly compensate for springback. Especially in automotive production, springback effects have been generally exhibited distinct after forming process of the high strength steel sheets. The springback effect occurred in the deformed state of metal parts must be taken into account by designing any sheet metal panels. Then, the purpose of the present research is to investigate the springback phenomenon of an automotive part named Reinforcement Rocker RL made from an advanced high strength steel grade JAC780Y, after stamping. In addition, the tools design has been carried out. Finite Element (FE) program known as DYNAFORM (based on LS-DYNA solver), has been applied to analyze and improve the springback effect on such forming part. An anisotropic material model according to type 36 (MAT_036 3-PARAMETER_BARAT) was applied. The results obtained from simulations were compared with required parts in each section. Then, the die surface from compensation in 2nd step forming was modified to use. Finally, the simulation part was verified with the real stamping part. It was found that the finite element simulation showed high capability for prediction and compensation of springback in high strength steel sheets forming.

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