Comming from here.
Please, I would like to know ¿how one could release one specific rotational degree of fredom of a T conection between two beams (or beam column)? .
Or seen in the other way.
¿How to constrain everything but one specific rotational degree of fredom of a T conection if one builds the nodes relationship from zero.
That would cover internal steel conections without relative internal rotational stiffnes in a specific direction. By internal I mean connection inbetween members not external BC.
I know how to build the displacements constrain by means of *equation but the relationship between rotational degrees of freedom doesn’t seem to work when the nodes belong to beam elements.
Someone suggest this is possible.
Thanksstrong textemphasized text