Vibratory parameters of blades from coordinate measurement machine data

被引：48

作者：

Sinha, Alok ^{[1
]}

Hall, Benjamin ^{[2
]}

Cassenti, Brice

Hilbert, Gary

机构：

[1] Penn State Univ, Dept Mech Engn, University Pk, PA 16802 USA

[2] Pratt & Whitney, E Hartford, CT 06108 USA

来源：

JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME | 2008年 / 130卷 / 01期

关键词：

Coordinate measurement machines - Finite element techniques - Geometric variations - Integrally bladed rotors - Natural frequencies and modes - Numerical results - Proper orthogonal decompositions - Vibratory parameters;

D O I：

10.1115/1.2749293

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This paper deals with the development of a procedure to model geometric variations of blades. Specifically, vibratory parameters of blades are extracted from coordinate measurement machine (CMM) data on an integrally bladed rotor (IBR). The method is based on a proper orthogonal decomposition of CMM data, solid modeling, and finite element techniques. In addition to obtaining natural frequencies and mode shapes of each blade on an IBR, statistics of these modal parameters are also computed and characterized. Numerical results are validated by comparison with experimental results.

引用

页数：8

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