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研究了多型航空发动机测量耙的结构。在满足工程要求的前提下,合理简化三维模型,建立了基于ANSYS的航空发动机测量耙模态分析法。通过对两种典型的测量耙进行有限元模态分析,并与相应的扫频振动试验结果进行比较,结果表明:采用基于ANSYS的航空发动机测量耙模态分析法的计算结果较试验件扫频振动试验结果的误差不超过7%,低于工程可接受的误差要求,说明该方法的合理性,为新型测量耙的设计改进提供了重要依据。
The structure of multi-aero-engine measuring rake is studied. Under the premise of meeting the engineering requirements, the three-dimensional model is reasonably simplified and the modal analysis method of aeroengine measuring harrow based on ANSYS is established. Through the finite element modal analysis of two typical measuring rakes and the comparison with the corresponding swept frequency vibration test results, the results show that the calculation results of modal analysis method of aeroengine measuring rake based on ANSYS are better than the sweep frequency The error of the vibration test result is less than 7%, which is lower than the acceptable error requirement of the project, indicating that the method is reasonable and provides an important basis for the design improvement of the new measuring rake.