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

doi:10.3901/JME.2015.23.036

Abstract

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

YOU Bindi, ZHENG Tianjiao, CHEN Jun, YANG Binjiu, ZHAO Yang. Analyses and Tests on Mechanical Properties of Dragging Flexible Cables with Large Deformation[J]. Journal of Mechanical Engineering, 2015, 51(23): 36-45.

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