...
首页> 外文期刊>Zeitschrift fur Angewandte Mathematik und Mechanik >On stability of uniformly-accelerated motions of an axially-symmetric heavy rigid body in an ideal fluid
【24h】

On stability of uniformly-accelerated motions of an axially-symmetric heavy rigid body in an ideal fluid

机译:理想流体中轴对称重刚体匀加速运动的稳定性

获取原文
获取原文并翻译 | 示例
           

摘要

We consider the problem of heavy rigid body dynamics in an infinite volume of an ideal incompressible fluid performing a potential motion. If the body is axially-symmetric, then the system admits partial solutions, when the axis of symmetry is vertical, and the body sinks and rotates around its symmetry axis. These solutions were found by V.A.Steklov already at the end of the 19th century, and he also pointed out that in general these motions are unstable (as they are uniformly accelerated). Here we consider the more delicate question, namely we derive the conditions for stability of the rotation axis, direction. The method of constructing the Lyapunov function may be generalized for deriving stability conditions for mechanical systems with nonstationary force-fields. [References: 17]
机译:我们考虑无限大体积的理想不可压缩流体在执行潜在运动时的重刚体动力学问题。如果主体是轴对称的,则当对称轴垂直时,系统会接受部分解,并且主体会下沉并绕其对称轴旋转。这些解决方案已由V.A. Steklov在19世纪末发现,他还指出,总体而言,这些运动是不稳定的(因为它们被一致地加速)。在这里,我们考虑一个更微妙的问题,即我们得出旋转轴方向稳定性的条件。构造Lyapunov函数的方法可以推广到具有非平稳力场的机械系统的稳定性条件的推导中。 [参考:17]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号