Analysis and Test Verification of Burst Speed of a Compressor Wheel Disk
In order to study the analysis method and improve the prediction accuracy of compressor wheel disk burst speed,the burst speed of a certain type of high-power gas turbine compressor wheel disk was analyzed based on the average stress method and the strain-based fracture criteria,and the wheel disk strain,residual deformation and initial burst site were verified by carrying out wheel disk overspeed and burst test subsequently.The study result shows that the analysis result of wheel disk burst speed agrees well with the experimental verification result,and the main burst mode of compressor wheel disk of the gas turbine is meridian burst;compared with the average stress method,the strain-based fracture criteria has relatively higher prediction accuracy and can accurately predict the initial burst site.
gas turbinewheelburst speedstrain-based fracture criteriaburst mode
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