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期刊论文 1

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2008 1

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Reliability design method for steam turbine blades

SHI Jinyuan

《能源前沿(英文)》 2008年 第2卷 第4期   页码 363-368 doi: 10.1007/s11708-008-0073-7

摘要: Based on theories of probability and statistics, and taking static stresses, dynamic stresses, endurance strength, safety ratios, vibration frequencies and exciting force frequencies of blades as random variables, a reliability design method for steam turbine blades is presented. The purport and calculation method for blade reliability are expounded. The distribution parameters of random variables are determined after analysis and numerical calculation of test data. The fatigue strength and the vibration design reliability of turbine blades are determined with the aid of a probabilistic design method and by interference models for stress distribution and strength distribution. Some blade reliability design calculation formulas for a dynamic stress design method, a safety ratio design method for fatigue strength, and a vibration reliability design method for the first and second types of tuned blades and a packet of blades on a disk connected closely, are given together with some practical examples. With these methods, the design reliability of steam turbine blades can be guaranteed in the design stage. This research may provide some scientific basis for reliability design of steam turbine blades.

关键词: design reliability     force     probability     purport     reliability design    

标题 作者 时间 类型 操作

Reliability design method for steam turbine blades

SHI Jinyuan

期刊论文