| 邵帅，刘秀芝，魏峰，邱丰.某低压涡轮盘破裂转速分析与试验验证[J].航空发动机,2019,45(2):19-22 |
| 某低压涡轮盘破裂转速分析与试验验证 |
| Analysis and Test Verification of Burst Speed of a Low-pressure Turbine Disk |
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| DOI： |
| 中文关键词: 轮盘 破裂转速 试验验证 低压涡轮 航空发动机 |
| 英文关键词:disk burst speed test verification low-pressure turbine aeroengine |
| 基金项目:航空动力基础研究项目资助 |
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| 中文摘要: |
| 为了研究轮盘破裂转速分析方法并提高破裂转速预测精度，基于有限元计算结果，采用平均应力法和局部塑性应变法
对某低压涡轮盘破裂转速和破坏起始部位进行预测，并与试验和失效分析结果进行对比分析。结果表明：平均应力法和局部塑性应
变法预测的破裂转速与试验结果吻合较好；局部塑性应变法预测轮盘破裂起始部位与失效分析结果吻合较好；对于研究的轮盘及
其工作环境，平均应力法预测破裂转速偏低，局部塑性应变法预测破裂转速偏高；局部塑性应变法预测精度相对更高。 |
| 英文摘要: |
| In order to study the analysis method of turbine disk burst speed and improve the accuracy of burst speed prediction，the
average stress method and local plastic strain method were used to predict the burst speed and the failure initial site of a low-pressure
turbine disk based on the results of finite element calculation. The results were compared with the results of test and failure analysis. The
results show that the burst speed predicted by the average stress method and the local plastic strain method is in good agreement with the
test results. The local plastic strain method is in good agreement with the failure analysis results in predicting the initial site of disk burst.
For the disk and its working environment，the average stress method is lower in predicting the burst speed. The local plastic strain method is
higher in predicting the burst speed，and the prediction accuracy of local plastic strain method is relatively higher. |
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