0114 and d 1116 rads for the undamped natural

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: natural frequency. How much effect does the rotational inertia have on the undamped natural frequency? Solution: From problem 1.60: != c J " 2 k# m + 2 $ r% and & d = c2 ' 2 J m + 2 4" m + J $ r # r2% k Given: k = 4 ! 105 Nm/rad m = 1.5 ! 10 kg 3 J = 100 m 2 kg r = 0.25 m and c = 8 ! 103 N " m " s/rad Inserting the given values yields ! = 0.114 and " d = 11.16 rad/s For the undamped natural frequency, ! n = k m + J / r2 With the rotational inertia, ! n = 36.886 rad/s...
View Full Document

Ask a homework question - tutors are online