Reliability Analysis for Differential Expansion of Steam Turbine by Saddlepoint Approximation
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 stressstrength 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.
Probability distribution Differential expansion Reliability analysis Saddlepoint approximation
Le Xin Li Chang Qing Su Ya Juan Jin
School of Equipment Engineering, Shenyang Ligong University, Shenyang, China Key Laboratory of Fundamental Science for National Defense of Aeronautical Digital Manufacturing Pro Department of Machinery Technology, Liaoning Petrochemical Vocational Technology College,Jinzhou Lia
国际会议
上海
英文
1077-1080
2011-10-21（万方平台首次上网日期，不代表论文的发表时间）