General Mechanical

General Mechanical

Spiral and Line Body for Hysteresis loop

    • williamsanjaya
      Subscriber

      I still have problem in modelling the Spiral stirrup column.
      What should i do if i also want to use the line body option to decrease the computation time?

      I can't model the spiral stirrup in line body option. Any suggestions?


      I need to build it in design modeler. 

      Ive already seen the tutorial on Youtube, but still confused how to make the spiral column convert into the line body?


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    • peteroznewman
      Subscriber

      Hello William,


      Use an Excel spreadsheet to calculate the 3D points on the helix and add two columns for curve number and point number to import a 3D curve into DesignModeler that will be a line body.


      In SpaceClaim, I have created beams from long straight solids by going into the Prepare table and clicking the Extract button and picking a solid. Is that what you tried?  It will work on the thick rods, I don't know if it will work on the spiral.


      Regards,


      Peter


       

    • Sandeep Medikonda
      Ansys Employee

      William,


      Please see below, may be this method will help you get what you intend to do.


      First, create an Helix-Solid body in SpaceClaim with the options you want (looks like you have this).



      Then use the Extract beams tool to generate the beams:



      Lastly, bring this into Mechanical and work with it as needed:



      Regards,


      Sandeep


       

    • williamsanjaya
      Subscriber

      Thanks peteroznewman SandeepMedikonda 


       


      The next problem I found is my model seems not bond each other. it happens with my spiral column and CFST column under lateral load.


    • Sandeep Medikonda
      Ansys Employee

      what are the details you have under contact? It looks like you have a beam to beam contact?


      Beam contact has had significant improvements in 18 and 19? It could just be that, are you able to upgrade?



      Regards,


      Sandeep


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    • williamsanjaya
      Subscriber

      Details under contact? I dont get it? Can you explain it more, please?


      I want to make these line body parts work together as concrete and reinforcement. but seems it is not work and bonded together.

      What sginificant improvements in 18 and 19?

      Thanks

    • Sandeep Medikonda
      Ansys Employee

      Hi


      This is what I meant:




        If your concrete and reinforcement are touching each other, can you use shared topology?


      Regards,
      Sandeep
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    • Ashish Khemka
      Ansys Employee

      Hi William,


       


      As suggested by Sandeep above, try using shared topology, which may help.


       


      Regards,


      Ashish Khemka


       


       

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