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横向加强构件作用下的开口薄壁梁等效建模方法

邓昊 程伟

邓昊, 程伟. 横向加强构件作用下的开口薄壁梁等效建模方法[J]. 北京航空航天大学学报, 2016, 42(7): 1469-1478. doi: 10.13700/j.bh.1001-5965.2015.0456
引用本文: 邓昊, 程伟. 横向加强构件作用下的开口薄壁梁等效建模方法[J]. 北京航空航天大学学报, 2016, 42(7): 1469-1478. doi: 10.13700/j.bh.1001-5965.2015.0456
DENG Hao, CHENG Wei. Equivalent modeling method of open thin-walled beam under action of transverse stiffening member[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(7): 1469-1478. doi: 10.13700/j.bh.1001-5965.2015.0456(in Chinese)
Citation: DENG Hao, CHENG Wei. Equivalent modeling method of open thin-walled beam under action of transverse stiffening member[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(7): 1469-1478. doi: 10.13700/j.bh.1001-5965.2015.0456(in Chinese)

横向加强构件作用下的开口薄壁梁等效建模方法

doi: 10.13700/j.bh.1001-5965.2015.0456
详细信息
    作者简介:

    邓昊 男,硕士研究生。主要研究方向:计算结构动力学。E-mail: 15313257835@163.com;程伟 男, 博士,教授,博士生导师。主要研究方向:结构动力学。E-mail: cheng_wei@buaa.edu.cn

    通讯作者:

    程伟,E-mail: cheng_wei@buaa.edu.cn

  • 中图分类号: TV312

Equivalent modeling method of open thin-walled beam under action of transverse stiffening member

  • 摘要: 卫星结构中通常有大量横向加强构件作用下的开口薄壁杆件,横向加强构件一般沿杆件轴向均匀分布,通过对这类结构研究,理论上证明了这种结构的振动微分方程与普通的开口薄壁梁振动微分方程有相同的形式,因此可以用开口薄壁梁单元进行等效计算。本文建立了开口薄壁梁的3种数学模型:有限元模型、传递矩阵模型和解析模型。采用优化理论中序列二次规划对等效截面参数进行辨识,同时分析了不同目标函数对辨识结果的影响,并且提出了一种对截面初始参数进行估计的方法。对于有限元模型,提出采用MATLAB与ABAQUS交互式参数优化方法,充分结合二者优点可以快速高效地对截面参数进行优化辨识,具有较强的通用性。通过实验验证了这种等效建模方法的正确性与精确性。所提出的等效建模方法可以减少90%以上的单元数量。通过建立这种简化模型,可以大幅度提高整星结构模型修正与结构重分析的效率。

     

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出版历程
  • 收稿日期:  2015-07-07
  • 刊出日期:  2016-07-20

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