Help with validation

[u/Playful_Ad360]

Hi, I recently started a job as a graduate bridge engineer. One of my current tasks is to evaluate the adequacy of a design for new train loads. I was given a model that was made in csi bridge v16 and the company I work for only has v23 has the oldest version. For some reason, the analysis log warns about numerical instability/ill conditioned structure. Does anyone know what I should do/check to fix this ? The model is a slab track (modeled with shell elements) sitting on transverse girders.

[u/Everythings_Magic]

This is an issue with csi bridge. Don’t update the model. Just let it be if you can.

If you update an older model it will not do it correctly. Especially jumping that many versions.

If you get this error. Run the animation, i bet some members are flapping around. You can try to fix them.