Stress spherical portion in spherical portion

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1

Good evening

I'm working on SW 2019

I can't constrain two spherical solids. In fact, you have to imagine a marble in a spherical cup. I would like to force the 2 spheres to be in contact. But I don't know how to do it.

In the attachment, you can see what I have. Perhaps it is clearer in images.

Would you please help me?

Lolo

 

 


capture_decran_2021-08-04_1324407.png
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2

Hello, it is possible to:

  • Select the faces > tangent stress (right-click > reverse the alignment if necessary). 
  • Select the two centers (sketch points for example) > coincident constraint. 

 

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3

Thank you for this answer.

Ok for the first point (tangency).

On the other hand, for the second, it doesn't seem possible to me, because the 2 spheres don't have the same diameter.

And by the way, how do you select a sketch point to constrain two pieces? I've never done that.

4

By simply selecting the sketch entities (points, lines...) and then constraint, but first these sketches must be visible

  1. From the parts tree, click on sketch > show (small eye). 
  2. Also from the interface (visibility control > show sketches. or view > hide show > sketches). 
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5

Hello

Otherwise you can display the temporary axes (by clicking on the eye and then the gray line) and constrain your parts in this way.

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6

The tangency proposed by Lynk is the logical constraint and works very well.

Attached is an ex in SW2017 (the documents are contained in the asm).


sphere_tangente.sldasm
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7

Hello

You can actually use the temporary axes for the normal orientation to the sphere and then a tangency constraint.

Kind regards


sphere-sphere.zip
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8

Thank you all for your help, your advice, your examples.

I was able to test your suggestions today.

It allowed me to understand what was not working.

And I even concluded that I had to change my design.

Thank you again to all. It's great here!!

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