Abstract
The application of high strength steel on automobile becomes more and more popular. So it is necessary to study the formability. In this paper, the effect of Bauschinger was studied. The material employed in this study is DH780. The influence of Bauschinger related parameters on material property was analyzed by changing the parameter values. Then, the effect on the springback behavior was studied after the finite element analysis. The part used was a longitudinal beam used in the automobiles. The related Bauschinger related parameters were Transient Softening Rate, Stagnation Ratio, Young’s Reduction Factor and Young’s Reduction Rate. The results were achieved after the analysis. The transient softening rate K shows a significant effect on the stress-strain curves. The increase of transient softening rate K leads to the decrease of reversed stress and the increase of springback.
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