Department of Mechanical Science, Okayama College of Science
Abstract
The relationships between stress and strain, and r-values in three directions of thin steel plates are obtained by simple tension test. Using these results, the first stage bending by V-form die are analyzed by the relationship between curveture and bending moment, which considered anisotropy of material. A new method for analyzing the bending are shown. Stroke (Y), Load (P), Spring-back (△θ) and Bending-angle (θ) are calculated by the method and compared with their experimental values. The calculated results about Y-△θ and Y-θ are good agreement with experimental values, respectively
