발간논문

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Vol.32, No.5, 593 ~ 601, 1994
Title
Analysis of Forming Limit Diagram of An electrogalvanized Steel Sheet
권재욱Jae Wook Kwon, 이동녕Dong Nyung Lee, 김인수In Soo Kim
Abstract
Forming limit diagram for an electrogalvanized steel sheet has been measured by hemispherical punch stretching. The experimental forming limit diagram has been compared with results calculated using the shear instability criterion and the M-K model which takes into account a strain gradient effect resulting from bending (curvature) of a flat sheet by punch stretching. The calculated results are in good agreement with experimental data.
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