I think I understand it now, thanks for your help. If I have more questions I'll ask again!
Maybe if more marriages worked together society would be going better...
disla, I was able to open your file in mecway then save it as an abaqas file so I could examine it (I am using calculix because I need to programmatically generate the input file). Have I got this right? The equations describe a relationship between…
Thanks for your comments. The simplest case I am examining is 2 poles connected with a bar between. The connections A and B can be bolted as a rigid connection, or bolted so the bar and pole can rotate relative to each other. I hope that is clear. I…