Table 3: Comparison between natural frequencies (scaled) from FEA using different methods.

ModeACM2 methodRigid elements methodDifference (%)
Scaled freq. [Hz]Scaled freq. [Hz]

70.2440.2372.742
80.2520.2491.297
90.5030.5000.609
100.6120.617−0.896
110.8170.7873.630
120.8330.8201.610
131.0000.9782.193
141.0191.0190.029
151.2341.2260.655