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  3. What does the GET function ARNODE() return for a 2D planar model? For a 1×1 planar element with all nodes selected, I get ARNODE values of 1.0 for each node. I was expecting 0.25.

What does the GET function ARNODE() return for a 2D planar model? For a 1×1 planar element with all nodes selected, I get ARNODE values of 1.0 for each node. I was expecting 0.25.

Tagged: 11, General, Mechanical APDL (f. ANSYS), structural-mechanics
    • March 17, 2023 at 8:59 am
      FAQFAQ
      Participant

      ARNODE is documented to return the edge area for 2-D planar elements. In this case, that was 1.0. If you had selected the nodes on one face of the 1×1 element it would return 0.5. Possible ways to get the true area of a 2-D element are to use the GET function ARFACE(e) divided by the number of nodes selected or by temporarily converting the elements to 3D shells, doing the ARNODE(n), and then converting the elements back to 2D.

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