Application of Rain—flow Counting Distribution Fitting Technique in the M ethod and Probability Estimation of Fatigue Life

ZHANG  Ji-Qiao

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Application of Rain—flow Counting Distribution Fitting Technique in the M ethod and Probability Estimation of Fatigue Life

更新时间：2026-05-27

- Application of Rain—flow Counting Distribution Fitting Technique in the M ethod and Probability Estimation of Fatigue Life
- Vol. 27, Issue 1, Pages: 82-85(2010)
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- Published：2010
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张吉桥. 雨流计数法与概率分布拟合在疲劳寿命估算中的应用[J]. 广东工业大学学报, 2010, 27(1): 82-85.

ZHANG Ji-Qiao. Application of Rain—flow Counting Distribution Fitting Technique in the M ethod and Probability Estimation of Fatigue Life[J]. 2010, 27(1): 82-85.
张吉桥. 雨流计数法与概率分布拟合在疲劳寿命估算中的应用[J]. 广东工业大学学报, 2010, 27(1): 82-85. DOI：

ZHANG Ji-Qiao. Application of Rain—flow Counting Distribution Fitting Technique in the M ethod and Probability Estimation of Fatigue Life[J]. 2010, 27(1): 82-85. DOI：

摘要

采用雨流计数法对一桁架节点的疲劳应力谱进行统计处理，得到各应力幅与相应的应力循环数，并对该计数结果进行Weibull概率分布拟合．基于Miner线性疲劳累积损伤理论，使用雨流计数结果和概率分布拟合结果对桁架节点的疲劳寿命进行估算．结果表明，雨流计数法与概率分布拟合法的联用对结构的疲劳寿命估算较为真实可靠．

Abstract

Rain-flow counting method is adopted to cycles from the fatigue stress spectra of a truss nodegain different stress amplitudes and their corresponding stress The W eibull probability distribution fitting is applied to the above resuhs．Based on Miner linear cumulative damage theory of fatigue，the datum of rain—flow counting results and Weibull probability distribution fitting results are used to estimate the fatigue life of the truss node．The experimental results show that the combination of the rain．flow counting method with the probability distribution fitting technique makes the estimation of the fatigue life more authentic．

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references

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