Fatigue damage prevention on turbine blades: study of underplatform damper shape

被引：20

作者：

Berruti, T. ^{[1
]}

Firrone, C. M. ^{[1
]}

Pizzolante, M. ^{[1
]}

Gola, M. M. ^{[1
]}

机构：

[1] Politecn Torino, Dept Engn Mech, Corso Duca Abruzzi 24, I-10129 Turin, Italy

来源：

DAMAGE ASSESSMENT OF STRUCTURES VII | 2007年 / 347卷

关键词：

turbine blades; fatigue damage; friction damping; underplatform damper;

D O I：

10.4028/www.scientific.net/KEM.347.159

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Forced vibrations can lead to an irreparable damage of a blade array. Devices called "underplatform damper" that dissipate the vibration energy are employed in order to reduce blade vibration amplitude. The present paper deals with the design of the underplatform damper. A numerical code to calculate the forced response of a blade array with dampers has been previously purposely developed. A method is here proposed for the estimation of the unknown contact parameters demanded by the code. The computation results are here validated by means of comparison with experimental results on a static test rig. Three dampers with different shape are tested.

引用

页码：159 / +

页数：2