5. Summary of results

This test validates the calculation and the consideration of participation factors calculated on a generalized modal basis. They are calculated in the particular case of modes with added mass and used to determine the seismic response of a cylindrical tank filled with water.

The results are relatively far from the reference (difference of 15% compared to other software). These differences are due to the fact that to approach them it is necessary to use an extended air modal base (up to 300 Hz). The calculation is feasible (less than one hour of calculation) but is then no longer within the scope of elementary verification.