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Shock and Vibration
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Shock and Vibration
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2019
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Article
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Tab 6
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Research Article
Mechanism Study and Reduction of Minivan Interior Booming Noise during Acceleration
Table 6
Torsional vibration modal frequency.
Mode
Frequency (Hz)
Damping ratio
1
1.6
0.0205
2
6.9
0.0067
3
29.6
0.0002
4
37.7
0.0416
5
50.5
0.0114
6
209.5
0.0434
7
215.8
0.0980