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Re: Connection/Idealization in Modal Analysis

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Hi Shaun,

Thanks for the reply. When using a point-point simple rigid link, I get a fatal error that a solid element has singular mapping. That seems understandable, I think. I managed to get surface-surface rigid links to work on non-parallel surfaces (that one alludes me). Unfortunately, this is not entirely physical, or rather does not represent the nonphysical model I am trying to validate. I essentially want to connect points that will have zero linear displacement but not constraint in rotation relative to eachother. a surface-surface locks all six degrees of freedom between the two surfaces. Not only this, but I was hoping that not only the vector magnitude between the two points remained constant, but also that the unit vector stayed constant.

 

For some reason, the modal results were the exact same with and without a very stiff spring, but it seems like the rigid link is a better solution to pursue.

 

I have the model attached. Forgive me if there is something wrong, I am not very comfortable with the file architecture of Creo yet. I had some Library parts, so I'm not sure if they will transfer correctly. There are two points embedded in the parts I am trying to connect (RUN and HSS). This is a validation for AutoPIPIE idealized support and beam models. See below for a screengrab as well.

 

Cheers,

Curran

 


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