natural frequency


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natural frequency

n
(General Physics) physics the frequency at which a system vibrates when set in free vibration. Compare forcing frequency
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References in periodicals archive ?
The seal will move at the natural frequency of the compressed rubber.
A modal filter was used by Kuratani and Oda (2010) for measuring the natural frequency of a roll-tensioned saw blade.
In order to avoid the vibration induced by resonance and ensure the self-priming pump can operate in a stability condition, the natural frequency of the blades submerged in water are analyzed, as shown in Fig.
The proposed method provides the steps to extract the vibration from the falling speed of turbo pump using the first natural frequency of the vibration.
For high delamination area (75%), the natural frequency is least affected for (0/90) layup method.
The first part of this proposed work consists of laboratory experiment to analyze changes in the behavior of a concrete specimen before and after corrosion through the dynamic parameter as a natural frequency. For this; beam specimen of size 150x150x500 mm was casted in the laboratory.
where [M.sub.B] and [[OMEGA].sub.B], expressed as [M.sub.B] = diag[[M.sub.B1], [M.sub.B2], [M.sub.B3], ...] and [[OMEGA].sub.B] = diag[[[omega].sub.B1], [[omega].sub.B2], [[omega].sub.B3], ...], are diagonal matrices of the modal masses and natural frequencies respectively, and [[omega].sub.Bj] and [mathematical expression not reproducible] represent the jth natural frequency and modal mass of the thin-wall structures in vacuo, respectively.
In both lateral bending modes, the rate of increase in the natural frequency when the number of flange joints increases from 6 to 12 is higher than that when the number of flange joints increases from 12 to 24.
For a micro cantilever beam described by the Timoshenko model with surface effects, the size dependence in the natural frequency of Timoshenko classical model and Timoshenko model including surface effects is illustrated in Figure 7.
Our theoretical analysis indicates that excessive lateral vibrations of the bridge occur if the lateral natural frequency of the bridge near half the vertical step frequency of the pedestrians.
The natural frequency values are 6.80 Hz, 7.95 Hz, 12.02 Hz, and 12.04 Hz which are in good agreement with the test results.