The spring back effect on bending refers to the tendency of a workpiece to return to its original shape after being bent or deformed. This is due to the elastic properties of the material.
The spring back effect is typically measured by the amount of residual stress in the workpiece after bending. This can be measured using specialized equipment such as strain gauges or by calculating the angle of spring back from the original bend angle.
The spring back effect can vary depending on the material properties of the workpiece. Generally, materials with high strength and stiffness, such as steel, have a greater spring back effect than more flexible materials like aluminum or plastic.
The thickness of the workpiece can also impact the spring back effect. Thicker workpieces tend to have a greater spring back effect due to the increased amount of material resisting the bending forces.
While the spring back effect cannot be completely eliminated, it can be minimized through various methods such as adjusting the bending techniques, using specialized tooling, or post-bending processes like heat treatment or stress relief annealing.