On the Integrability in Quadratures of the Problem of Rolling a Heavy Homogeneous Ball on a Surface of Revolution of the Second Order

A. S. Kuleshov, A. A. Shishkov
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Abstract

The problem of rolling a heavy homogeneous ball on an absolutely rough surface of revolution is considered. Usually, when considering this problem, instead of the surface on which the ball rolls, it is customary to explicitly specify the surface along which the ball’s center moves; these surfaces are equidistant. In this case, the solution of the problem reduces to the integration of some second-order linear differential equation with variable coefficients. The coefficients of this equation depend on the characteristics of the surface along which the ball’s center moves, its principal curvatures, and the Lamé coefficients. If the general solution of the corresponding second-order linear differential equation can be found explicitly, the problem of rolling a heavy homogeneous ball on a surface of revolution can be integrated in quadratures. However, it is impossible to find the general solution to the corresponding equation for an arbitrary surface of revolution in an explicit form. Therefore, of interest is the question for which surfaces of revolution can the general solution of a second-order linear differential equation be found explicitly. In this work, it is assumed that the surface along which the center of the ball moves is a nondegenerate surface of revolution of the second order. In this case, the general solution of the second-order linear differential equation, to the integration of which the problem of rolling a heavy homogeneous ball on a surface of revolution is reduced, can be found in an explicit form. Thus, it is proved that, if the center of a heavy ball rolling on a surface of revolution belongs to a nondegenerate surface of revolution of the second order, then the problem of a rolling ball can be integrated in quadratures.

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论均质重球在二阶旋转面上滚动问题的四次方可积分性
摘要 本文考虑了在绝对粗糙的旋转表面上滚动一个重均质球的问题。通常,在考虑这个问题时,不考虑球滚动的表面,而是明确指定球的中心沿其移动的表面;这些表面是等距的。在这种情况下,问题的求解简化为对某个系数可变的二阶线性微分方程的积分。该方程的系数取决于球心沿其移动的表面的特征、主曲率和拉梅系数。如果可以明确地找到相应二阶线性微分方程的一般解,那么在旋转表面上滚动重均质球的问题就可以用四元积分法来解决。然而,对于任意旋转曲面,不可能以显式形式找到相应方程的通解。因此,人们感兴趣的问题是,对于哪些旋转曲面,可以明确地找到二阶线性微分方程的一般解。在本研究中,假定球心沿其移动的曲面是二阶非退化旋转曲面。在这种情况下,二阶线性微分方程的一般解可以用显式求得,而在旋转曲面上滚动重均质球的问题就简化为对该方程的积分。因此,可以证明,如果在旋转曲面上滚动的重球的中心属于二阶非退化旋转曲面,那么滚动球的问题可以用四元数积分。
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来源期刊
CiteScore
0.70
自引率
50.00%
发文量
44
期刊介绍: Vestnik St. Petersburg University, Mathematics  is a journal that publishes original contributions in all areas of fundamental and applied mathematics. It is the prime outlet for the findings of scientists from the Faculty of Mathematics and Mechanics of St. Petersburg State University. Articles of the journal cover the major areas of fundamental and applied mathematics. The following are the main subject headings: Mathematical Analysis; Higher Algebra and Numbers Theory; Higher Geometry; Differential Equations; Mathematical Physics; Computational Mathematics and Numerical Analysis; Statistical Simulation; Theoretical Cybernetics; Game Theory; Operations Research; Theory of Probability and Mathematical Statistics, and Mathematical Problems of Mechanics and Astronomy.
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