Dynamic characteristics analysis of surge impact failure in turbine engines

DOI:	10.11809/bqzbgcxb2025.01.017
Keywords:	aircraft engines; surge; pressure compressor blades; radial friction; axial rubbing; numerical simulation
Abstract:	Surge is a typical fault mode of turbine engine, which may lead to compressor rotor collision failure in severe cases, so an effective analysis method should be established. The process of blade deformation and damage caused by coating scratching between compressor rotor blades and casing under surge load is analyzed by using explicit dynamic numerical simulation method with preset penetration. The explicit dynamic numerical simulation method of compressor rotor blade surface under unsteady load was used to obtain the deformation variation rule of blade under measured surge pulsating pressure. The modal characteristic analysis method of compressor rotor blade during impact response process is used to obtain the effect of blade mode on surge deformation. The numerical study of surge dynamic characteristics of turbine engines shows that the dynamic characteristics of compressor blades in surge state can be reproduced by explicit dynamic numerical simulation method, which can provide a basis for the mechanism analysis, accident location and process reproduction of the radial and axial friction failure of rotor caused by surge.
Issue:	Vol. 46 No. 1 (2025)
Published:	2025-01-31
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