Bending (Topic: 16200)

In bending the material on the inside of the neutral axis must compress, while the material on the outside must stretch. If this deformation gets too large, the material will break. The fracture will always be on the outside of the bend. The deformation is strongly dependent on the bend radii. Decreasing bend radii results in rapidly increasing stretch and risk of fracture. The size of minimum bend radius is influenced by many factors such as material properties, dimension and shape, bending angle, bending direction and bending method.

In the bending of all materials, except in the most soft condition, regard should be paid to the elastic springback.

Material intended for anodizing should normally be bent before anodizing. However, in some cases it is possible to bend after anodizing without any problems, especially if the anodic layer is thin.

References: [2,3,7]