Reliability Analysis for Differential Expansion of Steam Turbine by Saddlepoint Approximation

被引：0
|
作者：
Li, Le Xin [1 ]
Su, Chang Qing [2 ]
Jin, Ya Juan [3 ]
机构：
[1] Shenyang Ligong Univ, Sch Equipment Engn, Shenyang, Peoples R China
[2] Shenyang Aerosp Univ, Key Lab Fundamental Sci Natl Defense Aeronat Digi, Shenyang, Peoples R China
[3] Liaoning Petrochem Vocat Technol Coll, Dept Machinery Technol, Jinzhou, Liaoning, Peoples R China
来源：
VIBRATION, STRUCTURAL ENGINEERING AND MEASUREMENT I, PTS 1-3 | 2012年 / 105-107卷
关键词：
Probability distribution; Differential expansion; Reliability analysis; Saddlepoint approximation;
D O I：
10.4028/www.scientific.net/AMM.105-107.1077
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The reliability analysis for differential expansion of steam turbine is discussed extensively The ultimate state equation of differential expansion of steam turbine is proposed according to stress-strength interference theory. Based on the premise that the probability distribution of random parameters has been known, the differential expansion of steam turbine is analyzed by saddlepoint approximation method. The probability density function and cumulative distribution function of the ultimate state equation are accurately and quickly obtained by the way of saddlepoint approximation and, as a result, the saddlepoint approximation method is proved accurate with high computing speed in comparison with the Monte-Carlo method. Therefore, the application of the saddlepoint approximation method is accurate and efficient.
引用
收藏
页码：1077 / +
页数：2
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