Experimental and Numerical Analysis of the Effect of Ribs and Beds in Sheet Metal Parts with 90° Bend

Sheet metal forming processes are deformation processes in which force is applied to a blank of sheet metal to modify its geometry rather than to remove any material. Bending is one of the most common die-forming methods. It can be defined as a forming operation in which the metal is deformed or bent along a straight axis, normally bending operations are made in U-die or V-die. Corner beads may often be used to impart rigidity bending which might otherwise be too flexible and weak. In a right-angle bent sheet, the bend is usually a weak point. By the use of stiffening ribs, the overall rigidity is increased. However, how many? This paper aims at the numerical and experimental investigation of increasing bending strength when stamping in right-angle bent sheet a rib or bead in different depth and separation between each and other. The cross-sectional of bead is V, in steel sheet of gage No. 16 (U.S. standard).