Integrated stability analysis of large space structures based on potential energy consideration

Kosei Ishimura, M. C. Natori, Ken Higuchi, Mitsuo Wada

研究成果: Conference contribution

抄録

The stability analysis of large space structures such as space solar power system is discussed in this paper. Because these structures are very large and flexible, the mutual interference among position, attitude and structural deformation cannot be negligible. Therefore, a comprehensive analysis of the system dynamics including position, attitude and structural deformation on orbit has been required. In this study, we propose a new method based on potential energy to estimate the integrated stability. Based on potential energy, the integrated stability of deviations in position, attitude and structural deformation on orbit is analyzed. The potential energy, which is caused by gravitational force and centrifugal force, is considered as well as strain energy of the structure. By using the potential energy, not only equilibrium states but also the degree of stability in the neighborhood can be estimated. As a case study, we focus on a solar-array platform with gravity gradient stabilization. At first, the stability about the position and attitude is estimated based on the potential energy. As compared with the numerical results of system dynamics, the validity of the estimation is confirmed. Then, we show the change of stability which depends on the satellite's configuration. Finally, the stability of structural deformation around the equilibrium point is shown through the potential energy.

本文言語English
ホスト出版物のタイトル44th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
出版ステータスPublished - 2003 12月 1
外部発表はい
イベント44th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference 2003 - Norfolk, VA, United States
継続期間: 2003 4月 72003 4月 10

出版物シリーズ

名前44th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference

Conference

Conference44th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference 2003
国/地域United States
CityNorfolk, VA
Period03/4/703/4/10

ASJC Scopus subject areas

  • 土木構造工学
  • 材料力学
  • 建築および建設
  • 建築

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