Modal analysis of composite wind turbine rotor

I have built shell model of a wind turbine rotor in Abaqus CAE and i have run modal analysis. I see that the first natural frequency is around 1 Hz which is sensible but the displacements are very small 10^-12 which does not make much sense. Max Displacement in the model is always 1 in modal analysis. I am not sure how it is 10^-12 here. Since, the displacements are so small, I cannot increase the scale factor (Exaggerate) for visualization to see where is the problem. There are many tied constraints in the model as adhesive is not modelled and tied contraints are used to glue two components. I think the tolerance used for the tied constraints has a role to play. But I am still not sure what is causing such low displacements and how to see what is happening as the deformation scale factor cannot be increased a lot. Any hints will be of great help. 

Thanks

Divya