15 March 2019
- Last edited 15 March 2019
Do you already know the physics of why the sheet skews (rotates in the plane) as it passes through the nip, or are you trying to learn that in the simulation?
Comments on the Full model in Static Structural.
1. change the roller drum from a solid body to sheet bodies in DM by using the Midsurface feature so you can mesh with shell elements. You can represent the solid shafts at each end with a line body and assign it a circular cross-section to mesh with beam elements.
2. the Veener sheet must have > 3 elements through the thickness, and maybe as many as 12 elements to capture the permanent deformation due to the plasticity in the material model.
3. If you are only studying symmetric configurations, single sheet in center or two sheets symmetrically offset from the ends, you can cut your whole model in half at the center of the width of the roller.
4. Add a mesh control to put 180 elements around the drum circumference. You can't have large elements like you have now. Make similarly sized elements on the Veneer.
5. Put the veneer into the nip so some material sticks out the other side.
6. Ignore the centripetal forces on the drum and delete the two Rotational Velocity BCs. Those forces are very small compared with the forces needed to deform the Veneer.
7. Ignore gravity forces on the drum as that force is very small compared with the force needed to deform the Veneer.
For a one roller simulation, you can put a plane through the center of the veneer and use symmetry. That is a good first model.