General Mechanical

General Mechanical

Topics related to Mechanical Enterprise, Motion, Additive Print and more.

Moving Groups of Nodes

    • wcg
      Subscriber

      Hi,

      I was wondering if anyone knows of a way to move a large amount of mesh nodes using the worksheet, or some other method...??? I'm not talking about manually moving single nodes (to improve element quality, for example). I've got over 100 nodes that I need to deform to more accurately match a geometry that I'm working with. I've got the coordinates of the nodes (and the node IDs) that I need to move and the amounts that I need to move them in each coordinate direction - it's just that doing this manually is unrealistic.

      Thanks

    • Vinayak Vipradas
      Ansys Employee

      TRANSFER command is used to move the selected group of your nodes incrementally. This will work by defining a new LOCAL coordinate system at the location where you want your nodes. For example with a new local system 11, you would write TRANSFER 11 NewNum ALL where NewNum refers to a nodal number increment which you will want to make large enough to not overwrite any existing nodes. You will then need to delete all of your original nodes with NDELE.
      For further information on TRANSFER Command, please refer to the following link:
      Imported Coordinate Systems (ansys.com)

      Regards Vinayak
      Ansys Help
      Ansys Learning Forum (Rules & Guidelines)
    • wcg
      Subscriber
      Hi Vinayak Thanks for the tip.
      1) After looking at the documentation in the link you gave me, would it be easier/more efficient to import a totally new mesh with your approach, where the new mesh includes all of the nodes that I have moved plus all of the nodes that have remained in place (all with new node numbers , as you suggested)? Then I could just delete the original mesh...??? I mention this because all of the nodes that I need to move have individual and unique movements that are needed to more accurately capture the surface geometry of my lab specimen (its surface has irregular curvature from fabrication and assembly)
      2) If you think that step (1) would work, is there a way to renumber the nodes back to their original node number? (This may seem pointless, but it would help with some other code that I'm working on in MATLAB after I get my results from the ANSYS model)
      Thanks.
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