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

页码：886 / 892

页数：7

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