Learning Forum

[Oppen]

Hello everyone. I´m currently working on a base for a strucutre.

[Oppen]

I would be very grateful if you could give me some advise.

[peteroznewman]

It's a warning, not an error, so you don't need to fix this problem, but if you do fix it, the solution time might go down by a few seconds.
Open the geometry in SpaceClaim. On the Workbench tab, click the Share button. You might need to extend some edges to get the edges to imprint onto the adjacent face.
In Mechanical, delete the contact B1-1. Shared Topology was created in SpaceClaim and the mesh is now connected by sharing common nodes at the imprinted edges.

[Oppen]

Thank you for your fast response and for the aid given .
If I extend the edges of the surfaces in order for them to touch, when the thickness effect is given upon meshing the surfaces, wouldn┬┤t it create an interference in the model?

[peteroznewman]

For a T-intersection such as a rib standing on a plate, the shell mesh created on the rib has to reach the plate at the middle of the thickness, so the midsurface of the rib is extended to reach the midsurface of the plate. When you change the display to Thick Shells and Beams, the elements will appear to interfere, but when you turn Thick Shells and Beams off, you don't see interference, just two surfaces meeting at a line of nodes. This is normal.
If instead of the rib surface extending to reach the midsurface of the plate, it ends at the outside face of the solid plate body, then contact elements can bridge the gap to the midsurface of the plate. However contact elements introduce their own issues such as demanding more resources and can also have an effect on the stress results.