基于ANCF的松弛绳索动力学建模与仿真

doi:10.7527/S1000-6893.2016.0281

Abstract

Abstract:

Traditional absolute nodal coordinate formulation (ANCF) rope model is built based on beam element, and cannot reflect the incompressible and slack properties of fiber ropes. Considering the initial slackness of fiber ropes, the nonlinear axial stress-strain relationship of the rope is presented. The axial force of the rope is close to zero in the slack state, while the rope shows linear elastic property in the tense state. On this basis, the dynamic model of the slack rope is derived by applying ANCF. The traditional rope model and slack rope model are compared with each other through static and dynamic simulations, and the results indicate that compared with the traditional rope, the slack rope has greater deformation under gravity and different concentrated loads. According to the dynamic response of the rope after removal of the concentrated load, it is found that the traditional rope is always in tense state in the vibration process and the vibration of each point is synchronous; however, the slack rope keeps shifting in tense and slack states and there exists phase difference between each point, which can better reflect the dynamic characteristics of the rope in the slack state.

Key words: ANCF, fiber rope, slack, incompressible, dynamics

CLC Number:

ANCF ZHANG Yue, WEI Cheng, ZHAO Yang, TAN Chunlin, XU Dafu. Dynamic modeling and simulation of slack rope based on ANCF[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2017, 38(4): 220586-220586.

References

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Dynamic modeling and simulation of slack rope based on ANCF

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