Design Optimization of Aeroengine Titanium Matrix Composite Bling

SiC fiber reinforced bling structure utilizes the advantages of SiC fibers, such as high specific strength, high specific stiffness, high temperature resistance, fatigue resistance, and creep resistance, to enhance the load-carrying capacity and reduce the weight of the rotor disc. In this study, the design optimization of a fiber-reinforced bling for a specific engine compressor stage was conducted, taking into account considerations of strength, economy, and manufacturability. The macroscopic elastic parameters of the composite material were predicted using a micromechanical finite element method. A parameterized model and multi-objective parameter optimization method were employed for the bling design. The optimized bling meets the strength assessment criteria and achieves a weight reduction of 20.38% compared to the blisk structure. The findings highlight the importance of implementing composite bling and provides good reference for engineering practise.