@inproceedings{82c50244c0e84415836ee5dd327c97a3,
title = "Effect of nonlinear joints on space deployable truss structures",
abstract = "Joints nonlinearities with characteristics of freeplay and hysteresis are analyzed by describing joint nonlinear force-displacement based on describing function method. The nonlinear dynamic responses of the one-DOF system with joints under different exciting force levels are presented in the charts. The influence of the characterizing parameters, e.g., gaps, slipping forces of the joints on nonlinearities is analyzed. The nonlinear effects of freeplay and hysteresis present that the dynamic responses switch from one resonance frequency to another frequency when amplitude exceed the demarcation values. The hysteresis nonlinearity contributes nonlinear damping to the system. Dynamic responses of the modular beam-like deployable joint-dominated truss structure are tested under different sinusoidal exciting force levels which show obvious nonlinear behaviors. The nonlinear dynamic behaviors of the truss structure contributed by the joints shows a shift to lower resonance frequency and higher amplitude with the exciting force increases. The nonlinearity of the joints in the tested structure is identified to meet with the hysteresis nonlinearity. The experiment validates that describing method is an effective tool to model the joint nonlinearities.",
keywords = "Deployable truss structure, Dynamic, Experiment, Joint, Nonlinear",
author = "Hongwei Guo and Zongquan Deng and Xiang Wu and Rongqiang Liu",
year = "2012",
language = "英语",
isbn = "9789290922551",
series = "European Space Agency, (Special Publication) ESA SP",
booktitle = "Proceedings of 12th European Conference on Spacecraft Structures, Materials and Environmental Testing",
note = "12th European Conference on Spacecraft Structures, Materials and Environmental Testing ; Conference date: 20-03-2012 Through 23-03-2012",
}