| 气浮机叶轮裂纹扩展的可靠性分析 |
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| 引用本文： | 高慧,周长茂,孙铁,张素香,孙壮.气浮机叶轮裂纹扩展的可靠性分析[J].辽宁石油化工大学学报,2009,29(1). |
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| 作者姓名： | 高慧 周长茂 孙铁 张素香 孙壮 |
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| 作者单位： | 辽宁石油化工大学机械工程学院,辽宁抚顺,113001 |
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| 摘 要： | 以Pairs-Erdogan裂纹扩展模型为基础,应用了矩技术,采用裂纹极限状态方程,讨论了气浮机在基本参数为随机变量情况下的可靠性问题,并建立了气浮机叶轮的裂纹扩展可靠性模型,得出叶轮裂纹扩展寿命可靠度,该结果与Monte-Carlo仿真结果基本一致,表明该方法能给出比较准确的预测结果,适于工程应用。
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| 关 键 词： | 气浮机叶轮 裂纹扩展寿命 随机摄动 可靠性分析 |
Reliability Analysis for Crack Propagation of Flotation Machine Impeller |
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| GAO Hui,ZHOU Chang-mao,SUN Tie,ZHANG Su-xiang,SUN Zhuang.Reliability Analysis for Crack Propagation of Flotation Machine Impeller[J].Journal of Liaoning University of Petroleum & Chemical Technology,2009,29(1). |
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| Authors: | GAO Hui ZHOU Chang-mao SUN Tie ZHANG Su-xiang SUN Zhuang |
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| Affiliation: | School of Mechanical Engineering;Liaoning University of Petroleum & Chemical Technology;Fushun Liaoning 113001;P.R.China |
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| Abstract: | Based on the Pairs-Erdogan crack growth model and with the application of the moment and a crack limit equation of state,the reliability of the steam floating machine under the circumstance of random variable basic parameters was discussed,and a steam-floating impeller crack growth reliability model was established.The reliability of impeller crack propagation life was deduced,which is basically the same with the results of Monte-Carlo simulation.The result shows that the method can give a more accurate for... |
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| Keywords: | Flotation machine impeller Crack propagation Random perturbation Reliability analysis |
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