Presentation The Evaluation of the Nonlinear Tether Numerical Simulation Model Considered Residual Strain

Kudo, Shohei  ,  Yanagisawa, Masahisa  ,  Kawamoto, Satomi  ,  Iki, Kentaro  ,  工藤, 翔平  ,  柳澤, 正久  ,  河本, 聡美  ,  壹岐, 賢太郎

As a countermeasure for suppressing space debris growth, the Japan Aerospace Exploration Agency (JAXA) is investigating an active space debris removal system that employs highly efficient electrodynamics tether (EDT) technology as its orbital transfer system. In numerical simulation to evaluate the tether dynamics, tether has been modeled as point masses connected by nonlinear springs and viscous dampers. The model is not considered the residual strain which occur on the actual tether at plastic deformation. In this paper, a nonlinear model considering residual strain is developed based on the results of tensile tests. Then, numerical simulations are conducted to investigate the effects of nonlinearity and residual strain. The results confirm that it is necessary to consider the nonlinearity and the residual strain in the numerical simulation when strong tension is applied on the tether such as in the case of unintentional stopping of tether deployment at a short length.
Meeting Information: The 7th Space Debris Workshop (October 18-20, 2016. Chofu Aerospace Center, Japan Aerospace Exploration Agency (JAXA)(CAC)), Chofu, Tokyo, Japan
Physical characteristics: Original contains color illustrations
会議情報: 第7回スペースデブリワークショップ (2016年10月18-20日. 宇宙航空研究開発機構調布航空宇宙センター(JAXA)(CAC)), 調布市, 東京
形態: カラー図版あり

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