• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2015, Vol. 51 ›› Issue (23): 36-45.doi: 10.3901/JME.2015.23.036

• 机械动力学 • 上一篇    下一篇

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拖拽下大变形柔性线缆力学特性分析与测试

游斌弟1,  郑天骄1,  陈军1,  杨斌久1,  赵阳2   

  1. 1. 哈尔滨工业大学船舶与海洋工程学院  威海  264209;
    2. 哈尔滨工业大学航天学院  哈尔滨  150001
  • 收稿日期:2014-12-25 修回日期:2015-09-02 出版日期:2015-12-05 发布日期:2015-12-05
  • 通讯作者: 游斌弟,男,1981年出生,博士,副教授。主要研究方向为柔性线缆非线性动力学、飞行器动力学设计、控制与仿真。 E-mail:youbindi@163.com
  • 作者简介:游斌弟,男,1981年出生,博士,副教授。主要研究方向为柔性线缆非线性动力学、飞行器动力学设计、控制与仿真。 E-mail:youbindi@163.com
  • 基金资助:
    国家自然科学基金(51205079, 51575126)、微小型航天器技术国防重点学科实验室开放基金(HIT.KLOF.01507374)和哈尔滨工业大学科研创新基金(HIT.NSRIF.2015110)资助项目

Analyses and Tests on Mechanical Properties of Dragging Flexible Cables with Large Deformation

YOU Bindi1,  ZHENG Tianjiao1,  CHEN Jun1,  YANG Binjiu1,  ZHAO Yang2   

  1. 1. School of Naval Architecture and Ocean Engineering, Harbin Institute of Technology, Weihai 264209;
    2. School of Astronautics Engineering, Harbin Institute of Technology, Harbin 150001
  • Received:2014-12-25 Revised:2015-09-02 Online:2015-12-05 Published:2015-12-05

摘要: 为克服布线时柔性线缆因复杂空间形态而导致的难以精确地描述其运动状态、力学性能等问题,基于弹性细杆思想,建立大变形柔性线缆动力学模型,分析大变形线缆力学特性。建立线缆考虑空间约束、自重及拖拽与摩擦作用的动力学模型;推导大变形线缆的本构关系与运动参数表达式,并进一步构建典型运动情形下大变形柔性线缆的动力学模型;通过对线缆力学特性进行仿真分析与试验测试,得到了弯曲与拖拽运动下线缆的几何姿态、运动规律及受力情况。结果表明,弯曲线缆的曲率极值点为关键点,决定线缆整体运动形态与受力的趋势;线缆的拖拽运动类似于行波传动;同时试验实现了通过线缆力学模型逆推出其空间形态,验证了所建模型的正确性,为线缆路径规划提供了理论依据。

关键词: 大变形, 动力学建模, 仿真与试验, 柔性线缆

Abstract: Due to the complicated spatial attitudes, motion states and mechanical properties of flexible cables can not be described precisely. In order to overcome these problems, dynamics model of flexible cables with large deformation is established based on thin elastic rod. Furthermore, mechanical properties of the large deformation cable are analyzed. Dynamics model of the cable is deduced considering spatial constraints, deadweight, drag and friction. Meanwhile, constitutive relationship and motion parameters of large deformation cable are derived. Furthermore, dynamics models of large deformation cable in the typical motion situations are established. By means of simulation and experiment of the cable’s mechanical properties, geometrical attitudes, motion states and force conditions of the cable with the bending and dragging motions are obtained. The results show that extreme points of cable curvature are the key points, and trends of motion state and force condition of the whole cable are determined by those points. Moreover, the dragging motion of the cable is similar to the travelling wave transmission. Finally, spatial attitude of the cable is obtained from its mechanical model through the experiment. Therefore, correctness of the model is verified and conclusions have guiding significance to the routing planning.

Key words: dynamics modeling, flexible cable, large deformation, simulation and experiment