Abstract
Stretch flanging of steel sheets is an important formability issue for automobile industry. Finite element simulation study confirms that the edge of the hole deforms in a uniaxial tensile manner during the hole expansion process. To understand the effect of various tensile properties on hole expansion ratio, current experimental data and collected data from published work have been used. Yield stress, ultimate tensile stress, coefficient of normal anisotropy, total elongation, and post uniform elongation are closely related to hole expansion ratio. A non-linear relationship between hole expansion ratio and tensile properties (ultimate tensile stress, coefficient of normal anisotropy, and total elongation) is developed in the present investigation.
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Acknowledgments
The author wishes to thank Dr. Pinaki Biswas, Dr. Saurabh Kundu and Dr. Sanjay Chandra, R&D, Tata Steel Limited, Jamshedpur, India, for their valuable suggestions. The author also likes to thank Mr. Abhishek Raj for helping during HER experiments.
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Paul, S.K. Non-linear Correlation Between Uniaxial Tensile Properties and Shear-Edge Hole Expansion Ratio. J. of Materi Eng and Perform 23, 3610–3619 (2014). https://doi.org/10.1007/s11665-014-1161-y
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DOI: https://doi.org/10.1007/s11665-014-1161-y