为研究轮盘破裂转速分析方法并提高破裂转速预测精度，基于平均应力法和极限应变法对某型大功率燃气轮机压气机轮盘破裂转速进行分析。通过后续开展的轮盘超速及破裂试验，对轮盘应变、残余变形及起始破裂位置进行了验证。研究结果表明：轮盘破裂转速分析结果与试验相符，压气机轮盘的主要破裂形式为子午面破裂；与平均应力法相比，极限应变法预测精度更高，并且可以准确预测起始破裂位置。

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.

TK474.8

国家重大科技专项（J2019IV0015、Y2019VⅢ00130174）；中船集团自立科技项目(202109Z)