• Title/Summary/Keyword: Natural

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Natural modes of moduled and one-bodied floating structures (모듈형 및 일체형 부유구조물의 고유로드 비교)

  • Kim, Byoung-Wan;Hong, Sa-Young;Kyoung, Jo-Hyun;Cho, Seok-Kyu
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 2007.04a
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    • pp.111-116
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    • 2007

  • This paper investigates and compares the natural modes and static reponses of moduled and one-bodied floating structures. Equations for calculating natural modes and static responses are formulated by finite element method and the natural modes are solved by subspace iteration method. A floating parking place whose length is 120 m and width 60 m is considered as an example structure.

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Effect of Initial Tension on Natural Periods for a Suspension Bridge (현수교 초기장력이 고유주기 산정에 미치는 영향)

  • 김호경;이재홍
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2003.05a
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    • pp.450-454
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    • 2003

  • Natural periods are usually determined by the so-called linearized finite displacement theory even for a suspension bridge. This linearized method, with formulating structural stiffness by taking dead-load tension into consideration, calculates the natural periods of the bridge. As a result, the assumed initial tensions for each cable member may affect the accuracy of calculated natural periods and some other dynamic responses. This paper mainly demonstrates the effect of initially introduced tension accuracy on the evaluation of dynamic characteristics for a suspension bridge.

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Analgesic and Hypothermic Activities of Melandrin

  • Lee, Eun-Bang;Cheon, Seon-Ah;Lee, Young-Soon;Chung, Ha-Sook;Woo, Won-Sick
    • Archives of Pharmacal Research
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    • v.18 no.1
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    • pp.38-40
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    • 1995

  • melandrin exhibited an analgesic activity as assessed by inhibition of writhing syndromein mice and by pressure method of inflamed paws of arts and inflamed tails of mmice, and showed a hypothermic effect. However, no anti-inflammatory activity was shown.

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