Learning Forum

[s.breyer]

Hello all, I tried a simulation in LS-Dyna to twist some wires. Is there a way to export this model to a iges oder step file for further use in other simulation software which cannot read a keyword file? The problem is that due to the meshing the geometry is not recognized.

[Erik Kostson]

 

 

 

 

Hi

Yes mesh is not geometry (iges ..).

For using LSPP, use the below (iges or step is of course not possible – stl is possible and that can go perhaps into another software, e.g., SpaceClaim, to perhpaps generate an iges or step there):

In LS-PrePost, do the following:

• 1. Using the animation controls, display the state to output

 

• 2. From menu, go to FEM/Post/Output 

 

• 3. Select a format (Keyword, Movie BYU, Nastran, STL, etc.)

 

• 4. Select Active Parts Only or Entire Model

 

• 5. Select desired data (Element, Nodal Coordinates, etc.)

 

• 6. Click Current to select the currnet defomed state

 

• 7. Click Write (pops up file selection dialog)

 

• 8. Enter output file name and click OK.
  
  All the best
  
  Erik
  
  For Workbench LS-Dyna one can click (right mouse button) on the deformed results and choose Export -> STL.
  
  If you need more help on a specific model you can create a ACSS support request and we will try and help - or ask the Ansys account manager

[Dennis Chen]

something like this is way easier done inside a CAD program by using parametric sketches if you just want a stress-free state.

If you want a stressed-state, then you would have to start with a stress free state anyways.    LSPP has ways to do these twist mesh thing but in my opinion it's not the best place to start a stress-free state.     

I know I should offer Dyna related suggestion here but ls-dyna is a hammer but not everything has to be a nail.   There are just better ways to use other tool or a combination of other tools to accomplish a goal.