本文選題：導管架 + 應力幅　； 參考：《船海工程》2016年05期

【摘要】：針對導管架平臺在海洋環(huán)境中的結(jié)構低周疲勞問題,結(jié)合分析模型和設計規(guī)范,采用Neuber假設進行塑性修正,通過應變范圍得到偽熱點應力范圍,并確定熱點應力與偽熱點應力之間的關系,采用偽熱點應力取代熱點應力換算出一種新的S-N曲線作為低周疲勞的設計曲線,以偽熱點應力作為計算量來預測節(jié)點的低周疲勞壽命。
[Abstract]:In view of the low cycle fatigue problem of jacket platform in marine environment, combining the analysis model and design code, the plastic correction is carried out by using Neuber hypothesis, and the pseudo-hot stress range is obtained by strain range. The relationship between hot spot stress and pseudo hot spot stress is determined. A new S-N curve is converted by pseudo hot spot stress instead of hot spot stress as the design curve of low cycle fatigue. The low cycle fatigue life of joints is predicted by pseudo-hot stress.
【作者單位】： 中海石油(中國)有限公司秦皇島32-6作業(yè)公司;
【分類號】：P752
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本文編號：1860851