Some wires coming off the structure (Shell element) after loading.

[Mohamed Zied]

Hi,
I build a 6 girders bridge using shell elements and I used wire for bracings. I ran my model successfully without errors, but I got some of the bracings (wires) coming off the structure as you can see in the pictures. the load is just a self-weight and deck load.
Does anyone know the reason? and how to fix it?
Thank you in advance.

 

[FEA way]

It seems that they are disconnected initially. Which method did you use to attach wires to shells ? Were these parts merged ?

 

[Mohamed Zied]

I merged the shell parts as you recommended, so now all shell elements are merged in one part in which, I added wires to model bracing and truss members.
Should I merge again, shell members, and wires??

 

[FEA way]

Maybe some of the wires were separated from the shell before merging. Make sure that there’s no gap between these parts.