I would like to create a surface (on top side of a cube) in Abaqus
I am aware of doing it manually by using the following in GUI :
1) Tools->Surface-> Create
2) Select regions for surface by the angle
This is what I tried and failed :
1. Obtained all the nodes belonging to a face
2. Obtained all the elements connected to the nodes of step 1
3. Created an surface using the elements obtained in step 2 by appending the following lines in the .inp file
*Elset, elset=_Surf-1_S1, internal
130775,130776,...
( contains the list of all elements in step 2)
*Surface, type=ELEMENT, name=Surf-1
_Surf-1_S1, S1
Expected output and the output I got using the above process is provide din the link:
https://drive.google.com/open?id=1zUmoBydXERCNeVNCwP4A30CRmvwWtDkJ
Could anyone guide me through the creation of surface with Python interface or directly appending information to the .inp file
Normals and Faces
Assuming it is a quad (and not tetra mesh), such type of irregular selection often arises due to inconsistent element surface normals. Another thing I remember from the time I used to do similar work is that the ordering of faces of each element also needs to be consistent.