During forming metal process is critical, for feasibility point of view, the capacity of the metal to resist large strains. Thus, predicting the necking inestability is the key to determinate damage initiation and to have a good simulation.

One of the criteria most used is FLD Damage initiation. The restriction of this criteria is that the strains path should be linear. The shape of the curve based on Keeler-Goodwin is the most used, but is not valid for all metals.

Keeler-Goodwin formulation has been implemented in this plug-in for Abaqus to create quickly the FLD taking the elasto-plastic definition of the material.

Here is the link to the video about how the plug-in works.

https://www.youtube.com/watch?v=_TTtaEM5c_c

If you are interested in this plug-in or to develop a custom plug-in, don't hesitate to contact me.

If you want to see more plug-in which I developed, watch at my youtube channel:

https://www.youtube.com/channel/UCVqYOvG6cAJfXGj7ZVQhNPQ