Table 1

Comparison between numerical and shaker-based EMA and hammer-based EMA results.

Mode ANSYS frequency (Hz) Shaker-based EMA frequency (Hz) Relative error (%) Hammer-based EMA frequency (Hz) Relative error (%)
1 17.2 19.5 11.9 17.1 0.6
2 28.9 29.2 1.4 missed
3 39.2 39.1 0.4 39.1 0.4
4 47.7 48.8 2.3 46.9 3.4
5 67.8 68.3 0.7 missed
6 73.1 78.1 6.4 71.1 2.8
7 82.5 87.8 5.9 82.8 0.1
8 100.4 97.6 2.9 missed
9 112.4 107.4 5.5 missed
10 114.8 117.2 4.0 119.9 4.3
11 130.0 127.0 2.3 missed
12 140.5 136.7 2.8 missed
13 170.5 166.1 2.7 167.5 1.8
14 170.8 175.8 2.8 missed
15 187.3 185.5 0.9 missed

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