For a single degree of freedom spring-mass-damper system subject to forced harmonic vibration, the following FRF was measured (two figures are provided with different frequency ranges). Using the "peak picking" fitting method, determine \(m\) (in \(\mathrm{kg}\) ), \(k\) (in \(\mathrm{N} / \mathrm{m}\) ), and \(c\) (in \(\mathrm{N}-\mathrm{s} / \mathrm{m}\) ).

Fig. P3.7a Measured FRF

Fig. P3.7b Measured FRF (smaller frequency scale)

Transcribed Image Text:

Imaginary (m/N) Real (m/N) 1 0 -1 2 x 10-6 0 500 1000 1500 2000 x 10-6 -1 -2 -3 0 500 1000 (rad/s) 1500 2000