Creating symmetry under Abaqus

Simulation Generality
1

Hello

I try to create a symmetry under Abaqus but without success. It's a bit peculiar because it would have to be a plane symmetry but it behaves like an axial symmetry.

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Is this feasible?

(I understand that it's not very clear at first glance, but if anyone sees a little bit of what it could be I can provide more details)

2

Hello @xavier.nadin

First of all, welcome to our wonderful forum :innocent:

Looking at your image, it doesn't look like you're with a haircut.
With which software and version number you created the model.
Did you create the model entirely as a half part (I don't know :slightly_smiling_face: anything)

Kind regards

Kind regards

1 Like
3

Hello

Well thank you for the welcome :slight_smile:

I'm on Abaqus, 2021 version.

At the base the model looks like this:

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I did make a cut to remove a part, the left (which you can't see anymore) in order to reduce the number of nodes and therefore the calculation time.
However, I still need it to be " considered " in the calculation. And that's where it gets tricky... so I tried several methods,

  • Use a cyclical interaction and it works, almost. The forces are correctly applied but this symmetry " reverses " my right part. So it's not satisfactory
  • use mirror symmetry. The geometry is good, but at that point it is the forces that are not properly applied

Is it clearer for you?

Kind regards
X.NADIN

4

Hello @xavier.nadin

I'm going to reason, as in SW, it could put you on a track for Abaqus.

1°) A cross-sectional view is a view, an image but it doesn't change anything about the integrity of the volume.
So two solutions:
The bestial method makes you a removal of material corresponding to the part removed but the calculation will not take into account the part removed

The so-called "2D simplification" method
https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwjKqpzA4dr7AhVwRKQEHY_tD7k4ChAWegQICBAB&url=https%3A%2F%2Fwww.visiativ-solutions.ch%2Fsimplification-2d-solidworks-simulation%2Fpdf-simplification-2d-trucs-astuces-mycad%2F&usg=AOvVaw2vX96LDMzw_9Vt2ldQqjk2

But I must admit that I did not fully understand what you want to do
1°) the simulation on one part to lighten the calculation time!
2°) something else you want to do and that I don't understand!

That's it while waiting for your return! Otherwise it's "Tong at the cat" :cat2: :black_cat:

Kind regards

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5

Hello

Thank you for your answer. Indeed I could reduce the problem to a plan solution but this is not the object of the study (since we want to look "exactly" at what is happening in the matter).
I'm keeping the idea in mind for a next problem anyway. Thank you for your help!

Kind regards
X.NADIN.

6

Hello @xavier.nadin

Under solidworks in the results, using the "design dissection" function you can see the stresses inside the material and even by playing with a cursor see the areas of the most stressed to the least stressed.

See here at 0:19 SOLIDWORKS Simulation - Design Dissection - April 2017 - YouTube

Kind regards

PS: You can pass me your part with the constraint elements if you get stuck.

1 Like