Hello to all,

I am modeling a 3d reinforced concrete column in DIANA FEA. On the bottom side, the model is supported by an area support. When the model is meshed and calculated I get 1400 small reaction forces in every mesh node. I would like to create a Force-Displacement diagram and for that, I need one reaction force that is a sum of all small reactions.

I know that I can extract nodal forces in a table and create a sum in Excel, but I want to do a nonlinear analysis with several hundred load steps and that approach is not very efficient.

Any advice on how to get reaction force which represent a sum of nodal forces?

Thanks for any suggestions. It would be much appreciated.