WIT Press


A Simple Way To Find The Direction Of The Maximum Principal Moment Of Inertia Of Any Object

Price

Free (open access)

Paper DOI

10.2495/CMEM950651

Volume

12

Pages

8

Published

1995

Size

586 kb

Author(s)

B.C. Winfield, J.H. Butler & M. Twigg

Abstract

Usually it is difficult if not impossible to measure the inertia dyadic of an unsymmetric object. A mathematical model that investigated the effect that damping has on a rotating object was derived. It was shown that an object that is set into motion having a constant angular velocity component about a fixed axis and is allowed to rotate freely about the other two mutually perpendicular axes will align its major principal axis of inertia with that fixed axis of constant angular velocity. A simple experimental way to approximate the conditions of the mathematical model was developed and shown to be accurate in locating the orientation of the maximum principal axis of inertia for small objects. 1. Introduction Measuring or calculating

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