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Thermally induced vibrations of flexible beams using Absolute Nodal Coordinate Formulation

机译：基于绝对节点坐标公式的柔性梁的热致振动

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摘要

A coupled thermal-structural analysis based on the Euler-BernouIIi beam model is conducted within a framework of Absolute Nodal Coordinate Formulation. The absorbed heat flux on the beam surface depends on actual deformation and motion of the beam, therefore the coupled transient heat conduction equation and structural dynamics equation are established and solved interactively by the generalized-a scheme. Thermally induced vibrations for a thin-walled tubular boom subjected to a sudden heating in order to simulate spacecraft's exit from eclipse, and structure dynamics of a rotating flexible manipulator in a thermal environment are examined in details. With the coupled thermal-structural analysis, the thermal flutter can be well predicted for a cantilever beam moving from eclipse with large incident angles of solar radiation, and the proposed model is also able to characterize the coupled thermal-structural dynamics when a flexible beam is subjected to a large rotation. The developed model can be served as a basic unit for analyzing thermal-mechanical coupling response of large flexible space structures based on the Absolute Nodal Coordinate Formulation.
机译：在绝对节点坐标公式化的框架内，进行了基于Euler-BernouIIi光束模型的热-结构耦合分析。梁表面吸收的热通量取决于梁的实际变形和运动，因此建立了耦合的瞬态热传导方程和结构动力学方程，并通过广义方案交互求解。为了模拟飞船从日食的离开，对突然受到加热的薄壁管状动臂的热感应振动进行了详细研究，并详细研究了在热环境中旋转柔性机械臂的结构动力学。通过耦合的热结构分析，可以很好地预测从日食入射角大的日食移动的悬臂梁的热颤振，并且当柔性梁为柔性梁时，所提出的模型还能够表征耦合的热结构动力学。受到很大的旋转。所开发的模型可以作为基于绝对节点坐标公式分析大型挠性空间结构的热力耦合响应的基本单元。

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  • 来源
    《Aerospace science and technology》 |2013年第1期|386-393|共8页
  • 作者

    Zhenxing Shen; Qiang Tian; Xiaoning Liu; Gengkai Hu;

  • 作者单位

    Key Laboratory of Dynamics and Control of Flight Vehicle, Ministry of Education, School of Aerospace Engineering, Beijing Institute ofTechnology, Beijing 100081, China;

    Key Laboratory of Dynamics and Control of Flight Vehicle, Ministry of Education, School of Aerospace Engineering, Beijing Institute ofTechnology, Beijing 100081, China;

    Key Laboratory of Dynamics and Control of Flight Vehicle, Ministry of Education, School of Aerospace Engineering, Beijing Institute ofTechnology, Beijing 100081, China;

    Key Laboratory of Dynamics and Control of Flight Vehicle, Ministry of Education, School of Aerospace Engineering, Beijing Institute ofTechnology, Beijing 100081, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Thermally induced vibrations; Thermal flutter; Thin-walled tube; Absolute Nodal Coordinate Formulation; (ANCF); Finite element method;

    机译：热引起的振动;热颤振;薄壁管;绝对节点坐标公式;（ANCF）;有限元法;

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