Question: A spring, mass, damper system was subjected to a sinusoidal force excitation of magnitude 100 N and frequency of 35 Hz. It was given

A spring, mass, damper system was subjected to a sinusoidal force excitation of magnitude 100 N and frequency

A spring, mass, damper system was subjected to a sinusoidal force excitation of magnitude 100 N and frequency of 35 Hz. It was given a small displacement from the static equilibrium position and released. It was observed that the transient frequency was 33 Hz and that the amplitude attenuated by a factor of 9.2 each complete cycle. If the mass of the structure is 100 kg, then determine: (a) The damping factor (b) The undamped natural frequency (c) The support stiffness (d) The maximum amplitude and the frequency at the maximum amplitude (0.333; 35Hz; 4.836 MN/m; 0.031 mm; 90, 30.88 Hz; 0.033mm)

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a The damping factor The damping factor can be calculated using the following equation logfdfn 1fd2f... View full answer

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