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Investigation of Flutter Mechanism in Transonic Rotor Blades with Structural Damage via SPOD Method

Chunxiu Ji¹, Dan Xie^1,*

1 Northwestern Polytechnical University, Xi’an, 710072, China

* Corresponding Author: Dan Xie. Email:

The International Conference on Computational & Experimental Engineering and Sciences 2024, 30(2), 1-1. https://doi.org/10.32604/icces.2024.012592

Abstract

The persistence of accidents attributed to structural damage in traditional rotor blades remains a pressing concern for aeronautical experts. Given the infrequency of flutter in undamaged blades, this study directs its attention to a rotor blade afflicted with structural damage, with a primary objective of discerning flutter occurrences, elucidating underlying mechanisms, and scrutinizing resultant aeroelastic responses. This paper presents an investigation into the flutter mechanism observed in transonic rotor blades subjected to structural damage, employing the Spectral Proper Orthogonal Decomposition(SPOD) method. The study aims to understand the dynamics of flutter under the influence of structural damage, which is crucial for ensuring the safety and performance of rotor systems operating in transonic conditions. The SPOD method offers a systematic approach to analyze the modal characteristics of damaged rotor blades, enabling the identification of critical flutter modes and their interaction with structural anomalies. Insights gained from this investigation can contribute to the development of effective strategies for mitigating flutter and enhancing the structural integrity of transonic rotor blades.

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Keywords

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