Hi everyone,
i try to test a contact problem, all elements are 6 nodes triangle.
Following code, which i found somewhere, is just an example for 3 nodes triangle
CONTact ON
SURFace 1
POINts
FACEts
651 0 651
652 0 652
653 0 653
654 0 654
655 0 655
SURFace 2
LINE
FACEts
1 0 672 664
2 0 664 666
3 0 666 667
4 0 667 668
5 0 668 669
PAIR 1
NTOS 1 2
SOLM LAGM
END
So my first question is why in above code SURFace 2 is rigid?
For 6 nodes triangle problem, how should i define the surface? For example nodes 7, 8 and 9 are on the surface, node 9 is the midpoint of nodes 7 and 8. So shoud i use
SURFace 2
LINE
FACEts
1 0 7 8
or
SURFace 2
LINE
FACEts
1 0 7 8 9
?