Issue Section:
Errata
Keywords:
machine theory, vibrations, damping, rotation, classical mechanics
Topics:
Machinery, Classical mechanics, Damping, Rotation, Vibration
Correction to the definition of the imbalance mass required to correct a disk skew as reported on page 459. The equation was stated correctly, the explanation of the term Uoz was in error.
where,

δs

= runout from dial indicator, in. 1in.=2.54cm

δw

= axial separation of balance weights, symmetric to disk centerline, in. 1in.=2.54cm

Uoz

= couple unbalance mass required to counteract or to simulate a skew, oz1oz=28.35g

D

= diameter of disk, in. 1in.=2.54cm

Ds

= diameter where skew was measured, in. 1in.=2.54cm

Dw

= diameter of balance weight circle, in. 1in.=2.54cm

W

= disk weight, lbf.1lbf=4.45N

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