What kind of constraint have you used? I think the edges where all 3 blades intersect should be fixed in all dofs. You could simply use a fixed support. Also duplicate the structural analysis and perform a modal analysis. This will help you identify any unconstrained motion. Not sure but the connection object in the first 2 images looks empty. Why have you used a contact tool if no contacts are defined?
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New Post - Reply To: One-Way FSI help for this Wind turbine
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