Problem with RBE3 and suggestion

[Olivier Duchesne]

Dear M. Doyle,

Thank you so much for making PyNastran works so well. I deeply appreciate all I've done with it. 

In my simulations, I'm using the card "RBE3" (rigid body element). 
However, it looks like some inputs are redundant (from add_rbe3 function, weights and comps) and I had to modify a few lines in rigid.py to make it work. I don't have your programming skills, so I just share what worked with me. 

In rigid.py:

My modifications are in comments # ADDED/REMOVED by OD

and from def __init__(self, eid: int, refgrid: int, refc: str,

                 weights: List[float], comps: List[str], Gijs: List[int],
                 Gmi=None, Cmi=None,
                 alpha: float=0.0, tref: float=0.0, comment: str=''):

I removed "self.comps = comps", since it's not used. 

Again, thank you so much for this amazing module you've created. 

Best regards,

Olivier Duchesne

PhD student at Polytechnique Montreal

[Steven Doyle]

Comps is not redundant. Refc does not need to be the same as comps and generally is not.

It needs to support the full capability of the RBE3.

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