A motor mounted on a beam vibrates too much when it runs at a speed of 6000 rpm. At that speed the measured force produced on the beam is 60 lb. Design a vibration absorber to attach to the beam. Because of space limitations, the absorber’s mass cannot have an amplitude of motion greater than 0.08 in.
Q:The supporting table of a radial saw weighs 160 lb.The supporting table of a radial saw weighs 160 lb. When the saw operates at 200 rpm, it transmits a force of 4 lb to the table. Design a vibration absorber to be attached underneath the table. The absorber’s mass cannot vibrate with amplitude greater than 1 in. Q:A certain mass is driven by base excitation through aA certain mass is driven by base excitation through a spring (see Figure). Its parameter values are m = 200 kg, c = 2000 N.s/m, and k = 2 x 104 N/m. Determine its resonant frequency Ïr, its resonance peak Mr, and its bandwidth. Q:A certain series RLC circuit has the following transfer function. T(s)A certain series RLC circuit has the following transfer function. T(s) = I(s)/V(s) = Cs/(LCs2 + RCs + 1) Suppose that L = 300 H, R = 104 Ω, and C = 10-6 F. Find the bandwidth of this system. Q:Obtain the expressions for the bandwidths of the two circuitsObtain the expressions for the bandwidths of the two circuits shown in Figure. a.
Q:The displacement shown in Figure (a) is produced by theThe displacement shown in Figure (a) is produced by the cam shown in part (b) of the figure. The Fourier series approximation to this function is
For the values m = 1 kg, c = 98 N.s/m, and k = 4900 N/m, keeping only those terms in the Fourier series whose frequencies lie within the system’s bandwidth, obtain the expression for the steady-state displacement x(t). a.