5. Summary of results

Modal Features

The differences in the calculated frequencies remain less than 0.4%.

The maximum difference in significant effective masses is 4.4% (direction \(z\)). A difference of 24% is noted in the direction \(y\), on the effective mass of mode 6, which represents 0.15% of the total mass.

Static modes

The differences are of the order of 1% in the \(y\) and \(z\) directions, and less than 0.5% in the \(x\) direction.

Spectral response

Travels

The differences are of the order of 1%, with a difference of 4.6% for node 6 in the \(y\) direction (but the displacement at node 6 is of the order of 1.e-6 and is not significant compared to the other calculated values, of the order of 1.e-3).

Embedding reactions and widespread efforts

The average difference is of the order of 2%. A difference of 12.8% appears at node 5 for component \(\mathrm{Fz}\) of the generalized effort. There is an order of magnitude between the value of the effort to the left and to the right of the mass, the difference in the minimum value of the effort is 12.8%, 2.6% on the maximum value, and 5% on the average value.