Nonlinear Dynamics Analysis of Joint Dominated Space Deployable Truss Structures
Hong-Wei Guo1, Jing Zhang1, Rong-Qiang Liu1, Zong-Quan Deng1, Deng-Qing Cao2
(1.School of Mechatronics Engineering, Harbin Institute of Technology, Harbin150001, China;2.School of Astronautics, Harbin Institute of Technology, Harbin150001, China);1.School of Mechatronics Engineering, Harbin Institute of Technology, Harbin150001, China;2.School of Astronautics, Harbin Institute of Technology, Harbin150001, China
Abstract:
Joints are necessary components in the larger space deployable truss structures which have significant effect on the dynamics behavior of these deployable joint-dominated structures. Four kinds of joints’ nonlinear force-displacement relationship are analyzed based on describing function method. The dynamic responses of one-DOF jointed system under different exciting force levels are investigated to understand the influence of joint nonlinearity on dynamic responses. The influences of joint characterizing parameters on joint nonlinearities are analyzed. Dynamic responses of the modular beam-like deployable joint-dominated truss structure are tested under different sinusoidal exciting force levels. The experimental results show obvious nonlinear behaviors contributed by joints that dynamic response shifts to lower resonance frequency and higher amplitude with the increase of exciting force. The nonlinearity of the joints in the tested structure is compared with the theoretical results and identified to meet with the hysteresis nonlinearity.
Key words: deployable truss structure joint nonlinear dynamic experiment
DOI：10.11916/j.issn.1005-9113.2013.01.013
Clc Number:V414.1
Fund:
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Nonlinear Dynamics Analysis of Joint Dominated Space Deployable Truss Structures
本站小编 哈尔滨工业大学/2019-10-24
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