Component contact will consider contact between initially touching faces while a contact sets will consider contact where ever you define it (faces, edges or vertices). Also, there is a hierarchy. - Contact sets will also override component contact. There are other differences as well but this is the main difference.
All the best,
As nick mentions, the hierarchy is the important part.
The first 2 are only for touching solid faces and some special shell and beam conditions
Contact set between faces can be done for non touching faces as well as touching
Thank you booth. The hierarchy information is interesting, but I still don't know why the result are so different.
In one case I selected contact between components - global contact not penetration and the max tension was 55,9.
In second case I selected contacts- look for automatic -and I select all the contacts. The max tension was 110,6
For me this has no sense. What am I doing wrong?
You cut off the second screenshot, it doesn't show what kind I contact you created.
Also, looking at stress will probably cause you stress. Look at dispalcements
Same kind: no penetration
All the faces in contact are present. I think this is correct.
:-) ignorance produce me stress
what are the displacement results
post the model with 2 studies, one with global and one with local
looks like if, the global contact, "share" the force between the bottom and the sides.
In the second case, the bottom supports all the force. This is coherent with the displacement images.
However, if I have not friction, all the force should be supported by the bottom.
Seem likes, in the first case, the base suffer a force in the upper corner that reduce the stress at the bottom.
if you have global no penetration and contact sets on all the faces the result should be equivalent