Steped Crane Columns

[KillianPMG]

Hi guys

I’m having an issue with Robot and it would be great if you could give me some guidance.

I’m trying to model the stepped crane gantry columns (image below) in Robot for a 30 T overhead crane.

Mu approach is to offset the top column using the offset tool and use a rigid link to model the level arm due to the fact that the crane beam will be centrd on the flange of the larger column.

Do you think this is an accurate approach both for modelling the deflection of the column and the moments or would you recommend anther approach.

Kind Regards

Killian

[StefanoPasquini6790]

Hi

My suggestion is to make an example and with your model and then make a comparison with manual calculation. The value of bending moment in the column, due to the eccentricity of the beam, is very easy to define, then you can make by yourself your testings.

Greetings

[Artur.Kosakowski]

Mu approach is to offset the top column using the offset tool and use a rigid link to model the level arm due to the fact that the crane beam will be centrd on the flange of the larger column.

You may consider using rigid links for both the connection with the above column and the node of a crane beam in a similar  way as described here:

http://forums.autodesk.com/t5/robot-structural-analysis/beam-lateral-offset/td-p/5463882

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