I have attached my model - a front crash structure for a car.
As you can see Iv made it all out of structural members, and at the front I have added a strengthing plate through drawing a sketch and extruding it.
It wont recognise the plate as joined to the weldments I have... any ideas how to have weldments and featured sketches in an FEA model?
have you defined contact between them?
make sure you understand the rules for connecting things..etc.