{"id":362739,"date":"2024-04-17T15:36:09","date_gmt":"2024-04-17T15:36:09","guid":{"rendered":"\/forum\/forums\/topic\/transient-structural-contacts-error-2\/"},"modified":"2024-04-17T15:36:09","modified_gmt":"2024-04-17T15:36:09","slug":"transient-structural-contacts-error-2","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/transient-structural-contacts-error-2\/","title":{"rendered":"Transient Structural – Contacts Error"},"content":{"rendered":"

Hi all,<\/p>\n

I am trying to simulate Fluid Structure Interactions on ANSYS with fluent, transient structural and system coupling. My model is set to simulate flutter – a bar of aluminum passing through multiple sections of airfoils (to induce flexibility) and a weight at the top to add inertia. Everything is good until I update the solution in the system coupling module. the error comes from the transient structure solver and the error is: “Participant solution encountered a fatal error: Message: The value of UZ at node 84 is 1.4259873E+12. This is greater than the current limit of 1000000.This generally indicates rigid body motion with an unconstrained model.” I have gone back to the structural module and double checked everything: the support, the contacts (all of them are “Bonded” contacts). I have attached pictures and the model<\/a> (.zip file) below for clarity. I would really appreciate your help.<\/p>\n

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