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굽은 T形 제품의 편심압출가공에 대한 상계굽힘해석과 DEFORM™-3D에 의한 굽힘해석 비교
진인태,김진훈,김한봉 釜慶大學校 1997 釜慶大學校 論文集 Vol.2 No.2
The kinematically admissible velovity field is developed for the analysis of the curving of an eccentric extrusion. The curving of product in extrusion is caused by the difference of the linearly distributed longitudinal velocity on the cross-section of the workpoece at the dies exit. The result of the analysis show that the curvature of product increases with the increase in ecentricity of gravity center of the cross-section of the workpiece at the die entrance from that of the cross-section at the die exit. It also increase with the die land dimension. By the DEFORM-3D analysis, the curving of T-shaped product in extrusion is changed by the eccentricity, die land length and the friction constant. The result of the analysis by DEFORM-3D software shows that the curvature of T-shaped product increases with the eccentricity. The two analysis and one experiment show the curving phenomenon in eccentric extrusion process.