Deep Drawing Analysis & Unforming

Deep-drawn sheet metal parts behave very differently from simple bent parts. During forming, the material stretches and compresses in all directions — making blank calculation significantly more complex. This tutorial shows you how to master this using the Analyse Formability command in Siemens NX.

You will learn how to set up the analysis for a solid body, how to define the reference point and draw direction, and how to generate and refine the mesh for calculation. The tutorial covers how to check sheet thickness and stress distribution across the finished part, and how to identify critical areas before production. You will also see how to define constraints along edges that must not deform, how to unfold the part onto both planar and shaped target surfaces, and how to unform only selected areas of a part. A final chapter demonstrates how Corner Setback in the Edge Blend command can make deep-drawn corners even softer — increasing the maximum possible draw depth.