~~NOTOC~~
====== Roller levelling ======
Used at the end of the forming line to remove  shape defects using plastic bending and stretching.

  * A sheet is driven through 3 cylinders.
  * Small contact areas require a fine mesh.
  * ALE keeps a fine mesh between the cylinders.
  * CPU : 50min (ALE) vs 2 days (Lagrangian).

Classical transient Lagrangian model:

<WRAP centeralign column 100%>
{{url>https://www.youtube.com/embed/csgiMhCaJZI noborder allowfullscreen}}
</WRAP>

The proposed ALE model of continuous roll forming:

<WRAP centeralign column 100%>
{{url>https://www.youtube.com/embed/YMHoOMslpZA noborder allowfullscreen}}
</WRAP>