Calculation of the second variation in the problem of the stability of the steady motion of a rigid body containing a liquid
β Scribed by P Capodanno
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 298 KB
- Volume
- 61
- Category
- Article
- ISSN
- 0021-8928
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β¦ Synopsis
The stability of equilibrium or of steady motion of a rigid body containing a liquid is studied. A theorem due to Rumyantsev is used to derive the suflkient condition for stability con'ospondin~ to a minimum of the variable potential ener~ for the transformed rigid body. A procedure is presented for expressing the second variation of the variable potential energy as a quadratic form in the parameters that define the position of the body. The calculations are substantially simplified for the problem of the stability of equih'brium or uniform rotation around a fixed axis of a rigid body with fiqnid in a uniform gravitational field. Rumyantsev's results are derived anew.
π SIMILAR VOLUMES
The problem of the motion of a heavy rigid body is considered in the so-called "restricted" formulation, which is obtained on the assumption that two dimensions of the body, which we will call its "width" and "thickness", are considerably less than the third dimension, the "length" of the body. They