Table 2.  Fitted parameters of dynamics system.

Mass

m1 =7 kg

m2 = 6 kg

m3 = 14 kg

m4 = 45 kg

  

Stiffness

k1 = 6000 N/m

k2 = 5000 N/m

k3 = 9000 N/m

k4 = 9000 N/m

k5 = 16000 N/m

Damping

c1 = 250 kg/s

c2 = 600 kg/s

c4 = 1700 kg/s