Bending Cross Sectional Area In Sheet Metal

Stress distribution through the thickness of the part.

Bending cross sectional area in sheet metal. To define the bend region and reduce the force required to bend a part out of sheet metal down to something you can handle without a brake press slots can be cut at the bending line to selectively. Wipe bending or edge bending is another way to bend sheet metal edges. For materials with poisson s ratios ν displaystyle nu close to 0 3 the shear correction factor for a rectangular cross section is approximately. The slack between the wipe die and the punch plays an important role in getting a good result.

Let d the debth of the gutter let x the width of the gutter. It is important to make sure that the sheet is properly pushed onto the wipe die. In general as reduction of area increases the minimum allowable bend radius for a sheet ma terial decreases. Where is the area moment of inertia of the cross section is the cross sectional area is the shear modulus is a shear correction factor and is an applied transverse load.

Total elongation and reduction of area both increase with increasing cross sectional area of the specimen. 2d x 20 therefore. Sort of like this the width is x d d. As a result the wipe die also determines the bend s inner radius.

F ys uts 2 a. A piece of sheet metal w 20 inches wide is bent to form the gutter shown in the illustration.