A Simplified Approach for Predicting Springback in U-Draw Bending of Sheet Metals

U 드로오 벤딩에서의 스프링백 예측을 위한 이론적 단순화

The U-draw bending operation is known as a representative test method for springback evaluation of sheet metals since the sheet in U-draw bending operation undergoes stretching, bending and unbending deformations occurred at read stamping process. In this study, a simplified approach was proposed for predicting springback and side-wall curls in U-draw bending operations, using moment-curvature relationships derived for sheets undergoing stretching, bending and unbending deformation.