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Thank you ever so much for your help!! I think I am finally starting to understand the zerolength element now. I have made the corrections you advised, and have also applied the nodal load to node 1 and not node 12 as I had done previously. (As node 12 is fully fixed) My results come out rather pecu...

Hello, I am having difficulty using the ZeroLength Element. I have looked at several examples and tried different approaches, yet I am still not fully sure how it works... (I am new to OpenSees...) My model is for a simple composite beam, one end roller (node 1) with a rotational spring attached (wh...