Blade life: A comparison by cumulative damage theories

被引：28
|
作者：
Rao, JS [1 ]
Pathak, A [1 ]
Chawla, A [1 ]
机构：
[1] Indian Inst Technol, Dept Mech Engn, New Delhi 110016, India
来源：
JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME | 2001年 / 123卷 / 04期
关键词：
D O I：
10.1115/1.1384879
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
A turbine blade is modeled as a rotating pretwisted beam and subjected to aerodynamic excitation from the flow path interference. The resonant stresses are determined using a modal analysis. With the help of steady steam bending and centrifugal stresses and the dynamic stresses, life estimates are made using the linear and nonlinear cumulative damage theories and a comparison of the results is presented. Based on these results, recommendations are made on the usefulness of different theories for practical application.
引用
收藏
页码：886 / 892
页数：7
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