Dynamics of Machines - Part II - IFS.pdf

(a) Amplitude [m/s 2 ]
(b) Amplitude [m/s 2 ]
(a) Amplitude [m/s 2 ]
(b) Amplitude [m/s 2 ]
(a) Amplitude [m/s 2 ]
(b) Amplitude [m/s 2 ]
2
1
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frequency [Hz]
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x 10 −5 Signal (a) in Time Domain − (b) in Frequency Domain
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x 10 −5 Signal (a) in Time Domain − (b) in Frequency Domain
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frequency [Hz]
Figure 35: Resonance phenomena due to the excitation force with frequencies around the natural
frequencies of the mass-spring system: 3 D.O.F. system with the natural frequencies of 0.75 Hz,
5.12 Hz and 14.68 Hz, excited by the shaker – Spring-mass system ”A” with two masses m =
m1 + m2 = 0.382 Kg fixed at the beam length L3 = 0.610 m, two additional masses fixed at
L2 = 0.410 m and two more at L1 = 0.210 m.
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