Node numbers 1

[yaston4]

Just wanted to clear something up with other abaqus users

Where can I find the "global" node numbers nodes. I.e. if I have two parts, Part 1 has 50 nodes and part 2 has 70 nodes, its seems that although in my input file both parts start with node number 1. When I run a subroutine, it records Part 2 with a node number of n+50.

Wondering whats going on here and can I change this in CAE and/or the input file.

 

[akabarten]

Hi,

When your model is set with assembly and instances than node range can be the same for different instances.
For example nodes in instance “A” are from 1 to 100, and the nodes in instance “B” are from 1 to 80.
Abaqus will renumber all nodes since each id must be unique before starts analysis!

As you can see Abaqus uses different node numbers than you can find in inputdeck.
If you are going to use any subroutine and test nodes id you need to find internal number assigned by Abaqus.
To do this you can use routines GETPARTINFO/VGETPARTINFO and GETINTERNAL/VGETINTERNAL.
Detail information how use them are in Abaqus documentation: Abaqus User Subroutines Reference Manual, 2.1.5 Obtaining part information.

You can also set your model without assembly. Inputdeck generated by Abaqus/CAE will be only with unique nodes numbers
and you do not have to worry about internal - external node numbers reference.
Model -> Edit Attributies -> Select model -> Do not use parts and assemblies in input files.

Regards,
Bartosz

 

[yaston4]

Thanks, this really clears it up.