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http://dx.doi.org/10.5228/KSTP.2011.20.8.595

Effect of Strain Rate on the Anisotropic Deformation Behavior of Advanced High Strength Steel Sheets  

Huh, J. (한국과학기술원 기계항공시스템학부)
Huh, H. (한국과학기술원 기계항공시스템학부)
Lee, C.S. (자동차부품연구원)
Publication Information
Transactions of Materials Processing / v.20, no.8, 2011 , pp. 595-600 More about this Journal
Abstract
This paper investigates the effect of strain rate on the anisotropic deformation behavior of advanced high strength steel sheets. Uniaxial tensile tests were carried out on TRIP590 and DP780 steel sheets at strain rates ranging from 0.001/sec to 100/sec to determine yield stresses and r-values at various loading angles from the reference rolling direction. R-values were determined by the digital image correlation technique. Hill48 and Yld2000-2d yield functions were tested for their capability to describe the plastic deformation anisotropy of the materials. Initial yield loci were constructed using the Yld2000-2d yield function, which adequately described the anisotropic behavior of the materials. The shape of the initial yield loci was found to change with different strain rate, and the anisotropic behavior decreased with increasing strain rate.
Keywords
Anisotropy; Strain-rate; Yield Function; AHSS;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 C. S. Lee, G. H. Bae, S. B. Kim, H. Huh, 2010, Construction of Modified Yield Loci with Respect to the Strain Rates using Hill48 Quadratic Yield Function, Trans. Kor. Soc. Automot. Eng., Vol. 18, No. 2, pp. 56-60.
2 J. Huh, Y. K. Kim, H. O. Lee, K. S. Kim, H. Huh, 2010, Proc. Kor. Soc. Tech. Plast. Conf.(ed. Y. S Lee), Kor. Soc. Tech. Plast., Jeju, Korea, pp. 127-130.
3 H. Huh, J. Huh, C. S. Lee, 2011, Proc. Kor. Soc. Tech. Plast. Conf.(ed. Y. S. Kim), Kor. Soc. Tech. Plast., Changwon, Korea, pp. 27-32.
4 R. Hill, 1948, A Theory of the Yielding and Plastic Flow of Anisotropic Metals, Proc. R. Soc. London, Ser. A, Vol. 193, No. 1033, pp. 281-297.   DOI
5 F. Barlat et al., 2003, Plane Stress Yield Function for Aluminum Alloy Sheets-Part 1: Theory, Int. J. Plast., Vol. 19, No. 9, pp. 1297-1319.   DOI
6 H. Huh, S. B. Kim, J. H. Song, J. H. Lim, 2008, Dynamic Tensile Characteristics of TRIP-type and DP-type Steel Sheets for an Auto-Body, Int. J. Mech. Sci., Vol. 50, No. 5, pp. 918-931.   DOI
7 H. Huh, J. H. Lim, S. H. Park, 2009, High Speed Tensile Test of Steel Sheets for the Stress-strain Curve at the Intermediate Strain Rate, Int. J. Automot. Technol., Vol. 10, No. 2, pp. 195-204.   DOI
8 J. Yoon et al., 2004, Plane Stress yield Function for Aluminum Alloy Sheets-Part II: FE Formulation and its Implementation, Int. J. Plast., Vol. 20, No. 3, pp. 495-522.   DOI