A New Model for Contact Geometry in Single-Point Incremental Forming

Because the deformation within single-point incremental forming occurs in a small region around the area of contact, understanding the size and shape of the contact patch is useful to model process conditions. The following presents a new model of contact geometry, wherein contact geometry is derived from the intersection of the tool with the regions that have already been formed. Because this method allows for contact geometry to be determined based on measurable surrounding features, experimental measurements of contact geometry are performed to quantify the contributions of tool diameter, step size and wall angle on contact area.