Abstract
Strain-rate effects are included in an effort to provide data for better utilization of material in press-forming applications through material property optimization. Uniaxial tensile tests were conducted on aluminum-killed and rimmed SAE 1008 sheet steel at strain-rates up to 102 per sec. Yield, flow stress, and pct total elongation are found to be very sensitive to strain-rate, but the strain-hardening exponent and anisotropy coefficient both show only slight changes. Calculations using strain-rate insensitive and strain-rate dependent constitutive equations investigated the effect of anisotropy, strain hardening, and strain rate on two in-plane stretch problems. The effect of each of these parameters is found to depend on the type of stretch.
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S. J. Green, formerly Department Headd, Materials and Structures Laboratory, General Motors Manufacturing Development, Warren, Mich.
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Green, S.J., Langan, J.J., Leasia, J.D. et al. Material properties, including strain-rate effects, as related to sheet metal forming. Metall Trans 2, 1813–1820 (1971). https://doi.org/10.1007/BF02913410
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DOI: https://doi.org/10.1007/BF02913410