Effect of shape imperfection on vibration characteristics of thin parabolic antenna

Akihisa Watanabe, Hiroshi Yamakawa, Hiroaki Tsunoda, Kazuki Watanabe

研究成果: Article

抄録

Inflatable structures are being examined these days as a new structural design paradigm to realize larger and lighter space structures. In designing such large and flexible space structures, the modal parameters including natural frequencies and mode vectors are important. However inflatable structures are liable to bring about the shape imperfection since their shapes may be changed by the pressurization and condition of inflation gas. In this study, in order to evaluate how the shape imperfections affect the modal parameters, the inflatable parabolic antenna structures, those have various shape imperfections, were analyzed. From the results of the analysis, it was found that some shape imperfections affect the natural frequencies and mode vectors significantly. This paper shows the relationship between the shape imperfection and the modal parameter of thin inflatable parabolic antenna and design methods of such inflatable structure based on the analysis results.

元の言語English
ページ(範囲)2697-2702
ページ数6
ジャーナルNihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
73
発行部数10
出版物ステータスPublished - 2007 10
外部発表Yes

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Parabolic antennas
Inflatable structures
Defects
Natural frequencies
Pressurization
Structural design
Gases

ASJC Scopus subject areas

  • Mechanical Engineering

これを引用

Effect of shape imperfection on vibration characteristics of thin parabolic antenna. / Watanabe, Akihisa; Yamakawa, Hiroshi; Tsunoda, Hiroaki; Watanabe, Kazuki.

:: Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C, 巻 73, 番号 10, 10.2007, p. 2697-2702.

研究成果: Article

Watanabe, Akihisa ; Yamakawa, Hiroshi ; Tsunoda, Hiroaki ; Watanabe, Kazuki. / Effect of shape imperfection on vibration characteristics of thin parabolic antenna. :: Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C. 2007 ; 巻 73, 番号 10. pp. 2697-2702.
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