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考虑斜拉索松弛的盘绕式伸展臂振动模型

韩建斌 黄海 马海波

韩建斌, 黄海, 马海波等 . 考虑斜拉索松弛的盘绕式伸展臂振动模型[J]. 北京航空航天大学学报, 2014, 40(7): 970-977. doi: 10.13700/j.bh.1001-5965.2013.0450
引用本文: 韩建斌, 黄海, 马海波等 . 考虑斜拉索松弛的盘绕式伸展臂振动模型[J]. 北京航空航天大学学报, 2014, 40(7): 970-977. doi: 10.13700/j.bh.1001-5965.2013.0450
Han Jianbin, Huang Hai, Ma Haiboet al. Vibration model of coilable mast considering slack diagonals[J]. Journal of Beijing University of Aeronautics and Astronautics, 2014, 40(7): 970-977. doi: 10.13700/j.bh.1001-5965.2013.0450(in Chinese)
Citation: Han Jianbin, Huang Hai, Ma Haiboet al. Vibration model of coilable mast considering slack diagonals[J]. Journal of Beijing University of Aeronautics and Astronautics, 2014, 40(7): 970-977. doi: 10.13700/j.bh.1001-5965.2013.0450(in Chinese)

考虑斜拉索松弛的盘绕式伸展臂振动模型

doi: 10.13700/j.bh.1001-5965.2013.0450
详细信息
    作者简介:

    韩建斌(1983-),男,河北邢台人,博士生,hanjianbin1208@sa.buaa.edu.cn.

  • 中图分类号: V414.2

Vibration model of coilable mast considering slack diagonals

  • 摘要: 盘绕式伸展臂展开后,由于预紧力的作用,横杆被压缩至弯曲状态,同时斜拉索张紧.振动幅度较大时,斜拉索会松弛.以建立一种可以描述上述情况下盘绕式伸展臂基频特性的模型为目的,针对弯曲横杆及可松弛斜拉索做了如下处理,用较小的弹性模量及相应的预应变来模拟横杆受压弯曲后刚度较小,并具有预应力的特点;用一根可拉压杆模拟两根交替松弛的斜拉索.按照上述思想将松弛前后的盘绕式伸展臂作为两种结构,分别在Ansys中建立模型,计算得到这两种结构的基频.之后将伸展臂等效为满足分段线性刚度特性的连续梁模型,其分段刚度对应斜拉索松弛前后两种结构.结合有限元模型得到的斜拉索松弛判据,建立振幅较大时盘绕式伸展臂的振动方程.使用等价线性化方法,得到盘绕式伸展臂等效频率随端部振幅的变化关系,并用Ansys的瞬态分析对上述等效频率结果进行了仿真验证.上述模型及结果可以作为盘绕式伸展臂的设计指导及振动控制的理论基础.

     

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出版历程
  • 收稿日期:  2013-07-30
  • 刊出日期:  2014-07-20

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