Unable to add acceleration to Solution SOL 601

Pioneer
Pioneer

Ok, so attached is my test case. 

I would like to add an acceleration to a point connected to a surface with RBE2 elements. I am however not able to do this. Why is that?

 

My alternative is to add Enforced Motion Load, but it is not possible to create Table Field with values for displacement. 

 

 

3 REPLIES 3

Re: Unable to add acceleration to Solution SOL 601

Gears Phenom Gears Phenom
Gears Phenom
Ok, so attached is my test case.

You can add nastran input file (.dat file) too. Some people (like me) use Femap instead of NX.

Re: Unable to add acceleration to Solution SOL 601

Pioneer
Pioneer

Of course. Thank you. 

 

I have however changed the setup slightly. I realized during the process that I need instead to define Enforced Displacement Constraint.  The simulation attached runs ok, and no fatal messages. Still there are no results to view at the end. Do you know what is wrong with my setup here?

 

-Andreas-

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Re: Unable to add acceleration to Solution SOL 601

Gears Phenom Gears Phenom
Gears Phenom

You constrain DOF`s12345 at one spider node load other node on other spider with enforced motion in TX and TY. This should tear structure to pieces (produce nonphysical stress). I remove constraint and put rotational constraint on node with enforced displacement.

Снимок.PNG

Also, I note that load function used for TZ direction have zero y values.

Снимок1.PNG