WEN Jing, LI Shun-ming.Analysis of Thermal Effect of Synchronous Full Annular Rubbing on Nonlinear Rotor System of Aeroengine[J].航空发动机,2018,44(1):7-13 |
Analysis of Thermal Effect of Synchronous Full Annular Rubbing on Nonlinear Rotor System of Aeroengine |
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Key Words:rotor friction thermal effect synchronous full annular rubbing nonlinear vibration stability曰aeroengine |
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Abstract:Rubbing between rotor and stator is a failure whose process is complicate袁and great harm. In order to study the effect of
friction heat on synchronous full circular response, taking the aeroengine compressor rotor as research object, a nonlinear model of rotor
system was established, considering the characteristics of stiffness. The characteristics of friction thermal rubbing of the rotor was studied
and numerical simulation was conducted. The calculation were compared with that without friction thermal effect. The results show that the
temperature increases nonlinearly with the increase of the distance of relative rubbing point in radial direction, and is equal to room
temperature in 30 degree with symmetrical in circumference direction. Considering friction thermal effect, the speed range of synchronous
full annular rubbing is integrally reduced, the radial displacement of the rotor is increased, and the stability of the synchronous full annular
rub was reduced by the friction thermal effect |
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