二質点応答不規則荷重下のレインフローレンジ分布評価

概要

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We showed in the previous paper that the distribution of rainflow range of random wave with bimodal PSD can be determined analytically from its PSD geometry. The probability density of the rainflow range can be evaluated from the central frequency ratio γ and the power ratio b. This method postulates that the geometry of the two concentrated powers is rectangular. To apply the proposed method to the random wave response from a practical two degrees of freedom system, the procedure for extracting γ and b from the PSD has to be clarified. In this paper the method for evaluating γ and b from PSD will be investigated using simulation of random response wave from a two degrees of freedom system. Finally, the procedure to evaluate the probability density of rainflow range from given differential equations of the response system will be summarized.
一般社団法人日本機械学会の論文
1994-12-25