Research on crack propagation of aircraft engine blades based on multi-physics field coupling and modal frequencies

Junxi Bi, Xinyu Ge, Zenglin Hu, Jinfeng Li, Shaonan Yang, Hongwei Gao and Min Wu

International Journal of Reliability and Safety, 2024, vol. 18, issue 2, 103-120

Abstract: With the continuous development of the aviation industry, crack propagation in aircraft engine blades has become an undeniable factor affecting aviation safety. In this study, a method based on multi-physics coupling and modal frequencies is proposed to investigate the characteristics and mechanisms of crack propagation in aircraft engine blades. Firstly, a numerical model based on finite element analysis and the Extended Finite Element Method (XFEM) is established to describe the multi-physics response and crack propagation behaviour of engine blades. Secondly, the proposed numerical model and analysis methods are utilised to conduct in-depth research on the characteristics and mechanisms of crack propagation in aircraft engine blades. Furthermore, modal frequency analysis is introduced to analyse the dynamic response and crack propagation mechanisms of the blades under different modes. Finally, the main achievements and contributions of the study on crack propagation of aircraft engine blades based on multi-physics coupling and modal frequency analysis are summarised, and future research directions are discussed.

Keywords: engine blades; fatigue crack; natural frequency; fluid-structure coupling. (search for similar items in EconPapers)
Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:ids:ijrsaf:v:18:y:2024:i:2:p:103-120

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