"The fluid-solid interface is not valid..."
 

Attempting to set-up a FSI, and in the transient structural analysis, I get the following message:

"The fluid solid interface load is not valid for multi-step analysis."

I have selected all faces that will participate in the analysis, but I still get this declaration. Is there a trouble-shooting guide to eliminate this kind of error?My model is not overly complex.

Similar issue: Help!
 

Dear sir,

I am facing similar issue. "The fluid solid interface load is not valid for multi-step analysis."

I was wondering if you had found the solution to defining Fluid Solid Interface in multi-step FSI.

Any suggestion would be appreciated.

Thank you.

Dear sir,

I am also facing the same issue, have you solved this problem？

In this case, I try to make sure that the mesh settings are compatible with multi-step FSI. I look for mismatches between the fluid and solid meshes, especially in the interfaces.