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Vol.29, No.2, 126 ~ 135, 1991
Title
Forming Limit Diagrams of Steel and Brass Sheets
권재욱Jae Wook Kwon, 정재환Jae Hwan Chung, 이동녕Dong Nyung Lee
Abstract
Forming limit diagrams for various A-K steel sheets and 60-40 brass sheet have been measured. Experimental results. have been obtained by hemispherical - punch stretching and compared with those calculated, based on a shear instability criterion. FLDs have been analyzed by material properties obtained from uniaxial tension testing. Most of measured FLDs for steel sheets were located on the Keeler-Goodwin band. The level of FLD for brass is a little lower than those for A-K sheets. The calculated results are in good agreement with the measured data.
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