Hi

Dear all

I'm trying to model crack propagation in a simple rotating airfoil in abaqus. In order to reduce the computational time and cost, I must use the submodeling technique to model only the area where the crack should be with extreme fine mesh and use the submodel boundary condition at boundaries to extract data from global model with course mesh.

First I used only gravitational load just to simply compare the results of stress and displacement and both shown to be good enough. However when I add the rotation, stress results get extremely off chart somewhere around order of 1000. On the other hand the displacement results are perfectly matched with the global model.

Seems like there must be some modifications when using rotation BC which I did not consider. Any suggestions to resolve this issue?

Thanks in regard