Problems Study Modal Frequency

[miano_s]

HI,

In the attached study type Modal Fequency (vibrazioni),
I constrained the bodies but I have 6 Rigid Body Mode.
what am I doing wrong ? 

[miano_s]

he problem is the point mass If you delete it, it works

[miano_s]

I understand, the mass point is constrained
Is it a bag?

[Mike.Grau · Accepted solution]

Hi @miano_s,

Thank you for your post in the Forum.

Please, let us work through the case which we have created.

I will have a look at your design and check a couple settings.

Thank you,

[miano_s]

Hi @Mike.Grau,

Thank you,

I send two very simple models.
The first is correct
The second has in addition a manual point mass.

The second model fails because it does not take into account constraints.

[miano_s]

Hi @

Mike.Grau,

Thank you,

I send two very simple models.
The first is correct
The second has in addition a manual point mass.

The second model fails because it does not take into account constraints.

[Mike.Grau]

Hi @miano_s,

Thanks for the update.

Yes, I have been able to reproduce the issue.

The model is loosing the constraints as soon as you apply a point mass.

That´s not what you expect, running a frequency analysis.

I will go ahead and log this with the development.

Thank you for raising our attention to that

Thanks,