topic Re: Wind load generator - Robot crashes while meshing in Robot Structural Analysis Forum

Wind load generator - Robot crashes while meshing

Anonymous — Thu, 21 May 2015 20:45:53 GMT

Hi all,

I'm trying to generate the wind loads using the automatic wind load generator, and Robot crashes a few seconds after it starts meshing. Is this anything any of you came across before?

Thank you in advance,

Stephanos

Re: Wind load generator - Robot crashes while meshing

Rafal.Gaweda — Fri, 22 May 2015 07:10:53 GMT

Accuracy of your model should be corrected.

- all claddings must be flat (example of not flat ones marked in green below)

- objects should be precisely connected - marked in red

- meshed slab panel contour should be corrected ; remove unneceserry corner- marked in red

Corrected file attached

Re: Wind load generator - Robot crashes while meshing

Anonymous — Fri, 22 May 2015 08:07:36 GMT

Thank you Rafal, much appreciated.

And another think, I have used cladding panels between the beams on all floors and applied surface loads (instead of line loads for the floors/occupancy loads on beams) as this saves time. Is the a way to check if the panels (which are one way spanning by the way) transfer the load to the corresponding beams?

Thanks once more,

Stephanos

Re: Wind load generator - Robot crashes while meshing

Rafal.Gaweda — Fri, 22 May 2015 08:10:24 GMT

Re: Wind load generator - Robot crashes while meshing

Anonymous — Fri, 22 May 2015 12:58:36 GMT

Thanks for that.

I have added some vertical bracing members on the model to provide lateral stability. The beam/column and beam/beam connections will be simple, so I am adding releases to bars that have negative moments bigger than say 35kN (I don't want to add releases everywhere so I don't get instability). Is this the way to go about this? I have released the bracing members as well, but I am not sure how I can make them tension only. Any advice would be greatly appreciated.

Thank you once again,

Stephanos

Re: Wind load generator - Robot crashes while meshing

Rafal.Gaweda — Fri, 22 May 2015 13:04:55 GMT

Re: Wind load generator - Robot crashes while meshing

Anonymous — Fri, 22 May 2015 14:05:30 GMT

Thanks Rafal!

I successfully turned the bracing elements into truss/tension members. Obviously by default this leads to non-linear analysis, but do I need to create the Combinations again? It seems that they're gone and the cases are not visible in the case tab in combinations.

Re: Wind load generator - Robot crashes while meshing

Rafal.Gaweda — Fri, 22 May 2015 14:14:47 GMT

Yes you have to create combinations
You can use last option on Automatic Combination window :
"Manual combinations - generate"