回転殻の初期不整のエントロピーモデルによる統計的解析 : クーリングタワー型シェルの形状初期不整の推定

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タイトル別名
  • ESTIMATION OF STATISTICAL STRUCTURE OF INITIAL IMPERFECTIONS IN ROTATIONAL SHELLS BY ENTROPY MODEL : Initial imperfections in cooling tower shells
  • カイテンカク ノ ショキ フセイ ノ エントロピー モデル ニ ヨル トウケイ

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説明

A new method for estimation of the statistical characteristics of geometric initial imperfections in rotational shells is proposed and applied to estimate the statistical properties of initial imperfections in hyperboloidal cooling tower shells. The method is based on the entropy maximum criteria, which are often used in information science for analysing random phenomena. From the present analysis, we have found that there exists a high possibility of causing geometric imperfections with relatively high harmonic numbers in the rotational direction. However, since there exist at present little available data for initial imperfections, the validity and applicability of results obtained in this paper for practical designs are still left unresolved. But in furure, if many measured imperfections in shell structures were assembled and analysed, it would be possible to correctly evaluate the estimated values and the method would have a possibility of application in practical designs.

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