气浮机叶轮裂纹扩展的可靠性分析

辽宁石油化工大学学报 ›› 2009, Vol. 29 ›› Issue (1): 54-56.

气浮机叶轮裂纹扩展的可靠性分析

高慧,周长茂,孙铁^* ,张素香,孙壮

辽宁石油化工大学机械工程学院,辽宁抚顺113001

收稿日期:2008-09-10 出版日期:2009-03-25 发布日期:2017-07-05
作者简介:高慧(1981-),女,辽宁兴城市,在读硕士

Reliability Analysis for Crack Propagation of Flotation Machine Impeller

GAO Hui，ZHOU Chang-mao, SUN Tie^*， ZHANG Su-xiang， SUN Zhuang

School of Mechanical Engineering, Liaoning University of Petroleum & Chemical Technology, Fushun Liaoning 113001, P.R.China

Received:2008-09-10 Published:2009-03-25 Online:2017-07-05

摘要/Abstract

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。

关键词: 气浮机叶轮 , 裂纹扩展寿命 , 随机摄动 , 可靠性分析

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 forecast results and is suitable for application.

Key words: Flotation machine impeller , Crack propagation , Random perturbation , Reliability analysis

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): 54-56.

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 Petrochemical University, 2009, 29(1): 54-56.

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