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力学与实践 ›› 2019, Vol. 41 ›› Issue (1): 45-51.doi: 10.6052/1000-0879-18-174

• 应用研究 • 上一篇    下一篇

有底圆筒的浮态研究

尤明庆1)   

  1. 河南理工大学能源科学与工程学院,河南焦作 454010
  • 收稿日期:2018-05-02 出版日期:2019-02-20
  • 通讯作者: 1)E-mail: youmq@hpu.edu.cn

FLOATING POSTURES OF HOLLOW CYLINDERS WITH BOTTOM

YOU Mingqing1)   

  1. School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454010, Henan, China
  • Received:2018-05-02 Online:2019-02-20

摘要: 有底圆筒的浮态分析可参照实心圆柱体进行,但需要考虑顶面进水条件。圆筒内盛水或倒扣在水中时可在轴线竖直姿态稳定平衡,随内部水量减少,平衡位置将发生杈式分岔而倾斜平衡,水量再稍有减少即会倾倒。以直圆筒玻璃杯为目标,给出了相关公式的计算结果以及各种浮态的照片。

关键词: 浮态, 圆筒, 空气, 浮心, 分岔

Abstract: The floating state of the bottomed-hollow cylinder is analyzed as compared with a solid cylinder with the consideration of the water intake at the top. The cylinder may stably float in the vertical posture when it is filled with the water or is in an inverted position in the water. As the water volume inside the cylinder is reduced, the balance position will be tilt after a fork bifurcation, and topple over finally. Calculation results of the relevant formulas and the photographs of various floating states are given for glass cups.

Key words: floating posture, hollow cylinder, air, buoyant center, bifurcation

中图分类号: 

  • O317+.1