Figure P13.22 shows another type of vibration absorber that uses only mass and damping, and not stiffness, to reduce vibration. The main mass is m1 and the absorber's mass is m2. Suppose the applied force f(t) is sinusoidal.
Derive the expressions for X1(j()/F(j() and X2(j()/F(j().
Use these expressions to discuss the selection of values for m2 and c to minimize the motion of mass m1. To aid in your discussion, plot kX1/F versus (/ (k/m1 for several values of ( = c/2(km1.

Transcribed Image Text:

ti Main mi mass k/2 mっ Absorber 지 Main mass mi m2 Absorber