Widespread chaos in rotation of the secondary asteroid in a binary system

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• 作者：Mahdi Jafari Nadoushan ; Nima Assadian
• 关键词：Binary asteroids ; Sphere–ellipsoid model ; Rotational dynamics ; Asphericity ; Orbital eccentricity ; Resonance overlapping ; Chaotic rotation
• 刊名：Nonlinear Dynamics
• 出版年：2015
• 出版时间：September 2015
• 年：2015
• 卷：81
• 期：4
• 页码：2031-2042
• 全文大小：8,962 KB
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• 作者单位：Mahdi Jafari Nadoushan (1)
  Nima Assadian (1)
  
  1. Department of Aerospace Engineering, Sharif University of Technology, Tehran, Iran
  
• 刊物类别：Engineering
• 刊物主题：Vibration, Dynamical Systems and Control
  Mechanics
  Mechanical Engineering
  Automotive and Aerospace Engineering and Traffic
  
• 出版者：Springer Netherlands
• ISSN：1573-269X

文摘

The chaotic behavior of the secondary asteroid in a system of binary asteroids due to the asphericity and orbital eccentricity is investigated analytically and numerically. The binary asteroids are modeled with a sphere–ellipsoid model, in which the secondary asteroid is ellipsoid. The first-order resonance is studied for different values of asphericity and eccentricity of the secondary asteroid. The results of the Chirikov method are verified by Poincare section which show good agreement between analytical and numerical methods. It is also shown that asphericity and eccentricity affect the size of resonance regions such that beyond the threshold value, the resonance overlapping occurs and widespread chaos is visible.