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I placed a constraint across the face of the bracket that will be in contact with fork. Is this sufficient, or should I model a face to represent the fork, and then bolt the bracket to that?
I think I'd do the latter, because the bolt head contact is where the load actually gets transmitted. Constraining the interface with the fork crown is more like a glue joint. You don't actually have to model the bolt, just create a spot face on the bracket the size of the bolt head and apply a load consistent with the bolt tension.
gbj_tester
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On that note...
@mdcc_tester or anyone else who knows anything about FEA. I've used fusions in programme testing facility, and all seems fine with 5n downward force on the bolt holes out front. I placed a constraint across the face of the bracket that will be in contact with fork. Is this sufficient, or should I model a face to represent the fork, and then bolt the bracket to that? Also, have I done anything stupid here? Light weighs ~70g.