Force to close a

[fstopelli-2]

Goodmorning,

I have a following question: Is it possibile investigate with Creo Simulate the value of the force in order to "close"

the purple solid against the Yellow solid.I need a non-linear analisys, right?

Thank you for your help

[SweetPeasHub]

Yes you want non-linear.  Large Deformation and possibly Elasto-plastic material

Here is the difference in small displacement and Large displacement (small on left)

Here is how you do the 1.4mm deflection

Here is how you prevent infinite stress at the edge constraint... with a small region made rigid.

Here is the measure used to obtain the force.

Here are the Analysis definitions.  If using elasto-plastic material then Plasticity will have a check mark.

Plotting the measure vs. time

Final results.  If stress is above yield then you should use ELASTO-PLASTIC material.  Nonlinear material + non-linear geometry.  Otherwise force is generally predicted too high.  

Confirmation?  Run this model with found force (48N in this case) in X direction as a load in place of the enforced displacement.  Confirm max displacement about 1.4mm in X direction.

BONUS - I used a Mapped Mesh (not totally necessary but results are so smooooth!)

[fstopelli-2]

Thank you for a good response

but I'm not able to open the file.....

[SweetPeasHub]

That is why I had all the details... because not everyone is using the same version.

[skunks]

[fstopelli-2]

But for Use "ELASTOPLASTIC" material is correct this?

[SweetPeasHub]

Yes.

Use creo help to understand elastoplastic in Creo.

Link to help

[fstopelli-2]

Simulate said me that costraint and rigid link on surface region to prevent infinity stress is incompatible...

[SweetPeasHub]

This is OK.  It is a warning, not an error.  Only use caution when this message appears because you may be asking the model to do two different things at same time.

[fstopelli-2]

What You do in your model? You used the same way or an other?