Summary of results
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The differences between the results of *Code_Aster* and SAMCEF calculations with consistent masses are less than 0.2%.

The differences between *Code_Aster* calculation results with diagonal masses and SAMCEF with coherent masses remain less than 1%.

These results are in accordance with what could be expected, and reliably validate the natural frequency calculations in *Code_Aster* by CALC_MODES and the CALC_MATR_ELEM operator in coherent masses as well as in diagonal masses.