Learning Forum

[271356]

Hi, I want to model a circular hole in a rectangular model using AUTODYN with axial symmetry. However, I don’t see any tools for this operation. Could you please advise?

[Armin]

Hello,

Could you elaborate on the model? For instance, does your model include an existing hole, and is your goal to leverage symmetry by modeling only a portion, such as 1/4 of the geometry (Please refer to the picture below.)

[271356]

Hi, I want to do circle holes in ma rectangular 2D geometry, bellow I attach a schem. In upper part i am going to do 1/4 cirle hole and use axial symetry.

[Armin]

Please refer to the screenshot below for instructions on how to insert a 'Symmetry Region' and assign it to the appropriate edges of the model. Note that the 'Symmetry Normal' must be selected carefully to ensure proper consideration of symmetry.

[271356]

Thanks for your answer. I applied a symmetry line and generated a mesh, but now I can't go to Autodyna because there is a lightning bolt symbol next to the mesh parts.

Maybe it's caused by a strange symbol I see in Sys/Surface.

I believe the mesh was generated correctly. Do you know why I can't import it into Autodyna?

[Armin]

No problem at all. The symbol next to Sys/Surface indicates that the model is a surface, and there is no issue with it. Try updating the Mesh component system (see picture below) to see if the lightning symbol changes to a green check mark.

Also, whenever possible, it is much easier to start with an Analysis System rather than individual components. See the picture below to learn how to drag and drop the Explicit Dynamics analysis system (which is equivalent to Autodyn) onto the Project Schematic, allowing you to work step by step from Engineering Data to Results.

 

 

[271356]

[271356]

Hi,

Thanks for your instructions, but i have problem

1. I tried using Explicit Dynamics, but I get the following error:
   "Bonded contact is not supported for 2D Explicit Dynamics analyses."
   Do you know what this means?
2. I also tried importing the file into AUTODYN. I set the part to use ALE, but in AUTODYN it is read as Volume, and I can't change the material or apply boundary conditions.
   Do you know what might be wrong?