A New Blade-Casing Rubbing Model Based on Hertz Contact Theory

doi:10.16183/j.cnki.jsjtu.2019.06.004

Abstract

Abstract: Aiming at the phenomenon of aircraft engine blade-casing rubbing, this paper established a blade-casing Hertz-rubbing model considering the rotation effect and friction thermal effect. The influence factors of rubbing radial deformation were analyzed. The accuracy of the model was verified by comparing with the experiment results of existing normal rubbing force model. Moreover, the influence of rotation speed, stiffness coefficient, friction coefficient on the rubbing radial deformation were also analyzed. The results of the thermo-solid coupling simulation analysis on blade showed that the friction thermal effect had a certain influence on the overall radial deformation.

Key words: radial deformation； normal rub-impact force； rotation effect； friction thermal effect； rubbing model

CLC Number:

TH 113

ZHAO Yang,HUA Yixiong,ZHANG Zhinan，CHAI Xianghai. A New Blade-Casing Rubbing Model Based on Hertz Contact Theory[J]. Journal of Shanghai Jiaotong University, 2019, 53(6): 660-664.

References

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