| Citation: | CHEN Qiang, ZHANG Sheng, FENG Yuchun, et al. Failure analysis of plain woven SiC/SiC perforated plate-metal pin connection structure considering delamination damage[J]. Journal of Aerospace Power, 2025, 40(5):20230567 doi: 10.13224/j.cnki.jasp.20230567 |
To explore the application potential of ceramic matrix composite (CMC) mechanical connection structure in aero-engine, the failure mode and failure process of plain woven SiC/SiC perforated plate-metal pin connection structure under tension state were studied by combining test and numerical simulation. The deformation and failure process of the test specimens in real-time were observed through digital image correlation (DIC) technology. The main failure mode of the connected structure arising from the shear failure combined with delamination damage was revealed by test results. Based on the cohesive zone model (CZM), the failure load, failure mode and delamination damage of the plain woven SiC/SiC perforated plate were predicted by using the progressive damage analysis method (PDA). Good consistency between the numerical failure predictions and the test results was obtained, and the failure load prediction error was less than 10%, indicating the validity of the numerical model for the failure analysis of connection structure.
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