Question 5.20: A Single-Degree-of-Freedom Rotational Mass–Spring–Damper Sys...
A Single-Degree-of-Freedom Rotational Mass-Spring-Damper System
Consider the simple disk-shaft system in Example 5.8. A single-degree-of-freedom rotational mass-spring-damper system can be used to approximate the dynamic behavior of the disk-shaft system. The parameter values are I=0.01 \mathrm{~kg} \cdot \mathrm{m}^{2}, B=1.15 \mathrm{~N} \cdot \mathrm{m} \cdot \mathrm{s} / \mathrm{rad}, and K=4150 \mathrm{~N} \cdot \mathrm{m} / \mathrm{rad}.
a. Assume that a torque \tau=10 \sin (600 t) is acting on the disk, which is initially at rest. Build a Simscape model of the physical system and find the angular displacement output \theta(t).
b. Assuming that the external torque is \tau=0 and the initial angular displacement is \theta(0)=0.1 rad, find the angular displacement output \theta(t).
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