Comparison of Rivet Hole Expansion for Protruding Rivets; Universal and with Compensator

2019 ◽  
pp. 581-588
Author(s):  
Wojciech Wronicz
Keyword(s):  
Hole Expansion

scholarly journals Influence of Pre-hole Shearing Condition on Formability in Hole Expansion Utilizing Simplified Opposite Die Shearing Process

2014 ◽  
Vol 81 ◽  
pp. 1127-1132
Author(s):  
Kozoh Katoh ◽  
Kazuyoshi Kondo ◽  
Satoru Nakamura ◽  
Tohru Kakita ◽  
Tokiyasu Yogoh
Keyword(s):  
Hole Expansion

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.

scholarly journals The effect of microstructure on the sheared edge quality and hole expansion ratio of hot-rolled 700 MPa steel

2017 ◽  
Vol 896 ◽  
pp. 012103 ◽  
Author(s):  
A Kaijalainen ◽  
V Kesti ◽  
R Vierelä ◽  
M Ylitolva ◽  
D Porter ◽  
...  
Keyword(s):  
Expansion Ratio ◽  
Hole Expansion ◽  
Sheared Edge ◽  
Hole Expansion Ratio ◽  
Edge Quality ◽  
Hot Rolled ◽  
Effect Of Microstructure

Image Processing Algorithm for Real-Time Crack Inspection in Hole Expansion Test

2019 ◽  
Vol 20 (7) ◽  
pp. 1139-1148 ◽  
Author(s):  
Seungho Choi ◽  
Kwangyoon Kim ◽  
Jaeho Lee ◽  
Sung Hyuk Park ◽  
Hye-Jin Lee ◽  
...  
Keyword(s):  
Image Processing ◽  
Real Time ◽  
Processing Algorithm ◽  
Image Processing Algorithm ◽  
Hole Expansion ◽  
Expansion Test ◽  
Hole Expansion Test

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
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