Number of the records: 1  

Experimental validation of FEM-computed stress to tip deflection ratios of aero-engine compressor blade vibration modes and quantification of associated uncertainties

  1. 1.
    SYSNO ASEP0563591
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleExperimental validation of FEM-computed stress to tip deflection ratios of aero-engine compressor blade vibration modes and quantification of associated uncertainties
    Author(s) Mohamed, E.M. (GB)
    Bonello, P. (GB)
    Russhard, P. (GB)
    Procházka, Pavel (UT-L) RID, ORCID
    Mekhalfia, Mohammed Lamine (UT-L)
    Tchawou Tchuisseu, Eder Batista (UT-L) ORCID
    Number of authors6
    Article number109257
    Source TitleMechanical Systems and Signal Processing. - : Elsevier - ISSN 0888-3270
    Roč. 178, October (2022)
    Number of pages25 s.
    Publication formPrint - P
    Languageeng - English
    CountryGB - United Kingdom
    Keywordsblade tip timing ; FEM validation ; vibration measurements ; blade stresses
    Subject RIVBI - Acoustics
    OECD categoryApplied mechanics
    R&D ProjectsEF15_003/0000493 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
    Method of publishingOpen access
    Institutional supportUT-L - RVO:61388998
    UT WOS000808123300001
    EID SCOPUS85130095262
    DOI10.1016/j.ymssp.2022.109257
    AnnotationBlade Tip Timing (BTT) technology is concerned with the estimation of turbomachinery blade stresses. The stresses are determined from BTT data by relating the measured tip deflection to the stresses via Finite Element (FE) models. The correlation of BTT measurements with FE predictions involves a number of uncertainties. This paper presents the process for validating the FE stress and deflection predictions of aero-engine compressor blades under non-rotation conditions as a critical preliminary step towards the complete understanding of their dynamic behaviour under rotating conditions when using BTT measurements. The process steps are described in detail, including the FE modelling and analysis of the blades and the blade-disk assembly, and the measurements of the blade tip deflection and blade stress. Furthermore, the uncertainties associated with the FE modelling and the measurement processes are quantified. The results show that the FE model is valid considering the control of most uncertainties. The experimental validation of the FE computed stress-to-tip deflection calibration factors in the present study provides the basis for the determination of the calibration factors under rotational conditions using a previously presented BTT data simulator, and for the design of corresponding rotating experiments using BTT.
    WorkplaceInstitute of Thermomechanics
    ContactMarie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823
    Year of Publishing2023
    Electronic addresshttps://www.sciencedirect.com/science/article/pii/S0888327022004058/pdfft?isDTMRedir=true&download=true
Number of the records: 1  

  This site uses cookies to make them easier to browse. Learn more about how we use cookies.