Transactions of Nanjing University of Aeronautics & Astronautics
Research Progress of CMC Structures for Advanced Engines in Vibration Stability and Flutter Analysis
- Article
- Figures
- Metrics
- Preview PDF
- Reference
- Related
- Cited by
- Materials
Abstract:
Advanced propulsion systems experience critical challenges under extreme service conditions， including aerodynamic loads and thermal loads. Especially， flutter stability is a key bottleneck restricting the design and safe operation of hot structures in advanced propulsion systems employing ceramic matrix composites （CMCs）. Compared to traditional nickel-based alloys， CMCs offer superior high-temperature resistance and specific strength， making them ideal for next-generation engine hot structures. The inherent anisotropy， heterogeneity， and complex nonlinear behavior of CMCs， coupled with extreme operating environments， result in strong multi-physics interactions， including aero-thermo-structural， thermo-mechanical， and damage-aeroelastic coupling. These complexities significantly complicate vibration stability and flutter analysis. The recent research progresses on these problems are systematically examined， focusing on multi-field coupling mechanisms， material constitutive and damage evolution models， multi-scale modeling methods， coupled solution strategies， and the influence of key parameters on flutter characteristics. The current challenges are highlighted， including the complexity of high-temperature nonlinear modeling， the efficiency of multi-field coupling calculations， and the multi-scale modeling of complex weaving structures. Finally， an outlook on future development directions is presented to provide theoretical support for the design and safety assessment of hot structures of advanced CMCs.
Keywords:
Project Supported:
The work was supported by the National Science and Technology Major Project （No.Y2019-Ⅰ-0018-0017）， the National Natural Science Foundation of China （No.U24A2051）， the Natural Science Foundation of Jiangsu Province （No.BK20232037）， the Foundation of Key Laboratory of Aero-engine Thermal Environment and Structure， Ministry of Industry and Information Technology （No.CEPE2024002）， and the Postgraduate Research & Practice Innovation Program of Jiangsu Province （No.KYCX24_0605）.
Clc Number:
V216.3
Mobile website
