簡明にされたレインフローアルゴリズム「Ｐ／Ｖ差法」について

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タイトル別名
  • Refined Rainflow Algorithm: <i>P/V</i> Difference Method
  • カンメイ ニ サレタ インフロー アルゴリズム P Vサホウ ニ ツイテ

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This paper reports in detail a fundamental concept of a P/V difference method which is one of rainflow algorithms. The method is one of cycle count procedures which are useful for analyzing a complex strain time history.<br>A strain time history should be analyzed keeping in mind the stress-strain behaviour in the background. Based on this concept, the rainflow algorithm subtracts from a strain time history the parts which correspond to closed hysteresis loops in the stress-strain relation. The subtracted parts and the residual parts are successively processed for fatigue damage evaluation.<br>The algorithm given in this paper is simpler than the ones already presented, by the use of successive absolute differences between neighbouring peaks and valleys called P/V differences.<br>The simplicity enabled us to make a real-time on-site fatigue damage indicator.

収録刊行物

  • 材料

    材料 30 (328), 89-93, 1981

    公益社団法人 日本材料学会

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