A more elaborate, if undamped, model of the press described in Exercise 2.29 is shown in Fig.
Question:
A more elaborate, if undamped, model of the press described in Exercise 2.29 is shown in Fig. 5.24. For the case in which ω = 10√k/m, find the amplitude of the oscillations undergone by the mass at the right.
Data From in Exercise 2.29
A simple model of the mechanism of a press is shown in Fig. 2.81. In this model, the Scotch yoke of the left is driven by a crank that turns at a constant angular speed ω, while the spring is undeformed when x = 0 and y = 0.
Under the current design it has been found that, when ω = √k/m, the mass oscillates with an amplitude M = 5l. From this observation, can you estimate the damping ratio ζ?
A modification is being proposed, that consists of changing the spring to one with a new stiffness knew. Choose knew, without modifying c, so that the amplitudes of the oscillations of the mass and the Scotch yoke coincide.
Step by Step Answer:
Dynamic Response Of Linear Mechanical Systems Modeling Analysis And Simulation
ISBN: 9781461429463
1st Edition
Authors: Jorge Angeles