I'm using Abaqus 2024 and I have this doubt since I need to identify the nodes ordering as you can see in the image attached. In my subroutine I declared these variables:
XE1 = COORDNODES(1,3)
XE2 = COORDNODES(1,1)
YE1 = COORDNODES(2,1)
YE2 = COORDNODES(2,3)
ZE1 = COORDNODES(3,3)
when I change the orientation applying a local axis, I want to know if the element vertices will keep the same ordering or they will swap according to new local orientation.
Hi,
Nodes ordering doesn't take into account any coordinate system, only the values of coordinates defined for each node, how was explained in the picture before from Ahmad. But, you can make a small test to any preprocessor and read the input file to understand. Of course, should exist a specific ordering to define a correct solid, like in the image and is connected also with the material orientation!
To have a right SOLID definition should be in that order: first on the bottom face and after the top face, that inside ABQ makes a right assembly of the elemental matrices and after, the global matrices assembly for Stiffness, Mass, or Damping, used finally in a mathematical equation of equilibrium.
Best regards,
Ciprian
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