Forming Simulation Unknown Distance between Deformed Body and Rigid Surface

[Rick4949]

Hello dear People,

I have a Problem with my forming Simulation and dont know where the Problem is coming from.
For a better Explanation i uploaded two Pictures.

In the first Picture you can see my model. I am using Abaqus Explicit and have Step Time of 0.1s. My model includes Interaction modul (Surface to surface) with tangential behaviour (Penalty friction model) and a elastic-plastic material behaviour. As Rigid Bodies i am using Analytical Rigid Surfaces.

Now... my Problem is i dont know why there is always a big gap between my deformed Body and rigid surface. In the end of my Simulation i have just a little contact surface, which does not really depict my real forming Simulation. In the second Picture you can see which gap i mean which is staying constant in time.

I hope somebody can help me or give some more ideas. If there are any question please ask them in the thread. Thank you


First Picture :

http://files.engineering.com/getfile.aspx?folder=a3874d22-5dad-4c4c-b3c8-49a37674e6e3&file=1.png

Second Picture:

http://files.engineering.com/getfile.aspx?folder=144c7ecf-0967-4ee7-911c-7d5570fd9106&file=2.png

Sincerly Rick4949

 

[Mustaine3]

Why is that bending wrong? Have you applied the boundary condition at the wrong end?