›› 2002, Vol. 38 ›› Issue (7): 65-69.
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倪侃;张圣坤
发布日期:
Ni Kan; Zhang Shengkun
Published:
摘要: 首先建立了等幅疲劳中值Sa–Sm–Nc曲面方程和变幅加载下疲劳可靠性二维统计Miner准则。其次,重点分析了国外船舶与海洋工程领域广泛采用的疲劳可靠性Wirsching模型,发现其在理论上存在不自洽性,并基于二维统计Miner准则建立了改进的Wirsching模型。最后,给出了一个具体应用实例。表明本文建立的二维统计Miner准则具有较好的工程实用价值。
关键词: Wirsching模型, 二维统计Miner准则, 疲劳可靠性, 中值Sa–Sm–Nc曲面
Abstract: The function of constant amplitude median Sa-Sn-Nf surface is established. And the two-dimensional statistical Miner's rule is proposed for reliability based prediction of fatigue life under variable araplitude loading. Then, Wirsch-ing's model is restudied, and it is found that Wirsching's model is not of self-consistency. Therefore the modification of Wirsching's model is performed based on statistical Miner's rule. In the end, an example of application is presented, show-ing that the two-dimensional statistical Miner's rule is very convenient and feasible in fatigue reliability anaiysis for engi- neering structures.
Key words: Median St-Sm-Nc surface Two- dimensional statistical Miner's rule Wirsching's model, Fatigue Reliability
中图分类号:
TB114.2 O346.2
倪侃;张圣坤. 疲劳可靠性二维统计Miner准则[J]. , 2002, 38(7): 65-69.
Ni Kan;Zhang Shengkun. TWO-DIMENSIONAL STATISTICAL MINER'S RULE IN FATIGUE RELIABILITY[J]. , 2002, 38(7): 65-69.
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