科研之友
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摘要
The effect of plastic strains on the change of sheet metal behavior during unloading and reloading has been studied. On the basis of uniaxial tensile tests a little influence of plastic strains on the change of elastic properties of Al 6061 alloy has been shown, a 16% decrease of apparent Young modulus of DC04 steel and as much as 22% DP600 steel. Apparent Young modulus decrease during plastic strains has a great influence on the accuracy of modeling the final shape of a drawpiece. The corrected Young modulus allowed to significantly improve the accuracy of modeling a three-point sheet metal bending.
- 出版日期2010
