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| Optimizing Blade Arrangement for Aero-Engine Rotor Based on Random Equiprobability Algorithm |
| XU Guangqing1 , BAI Yan1 , SUN Huibin2 , FU Xuan1 , ZHANG Gang1 , PENG Qing1 , CHANG Zhiyong2 |
| (1. AECC Sichuan Gas Turbine Establishment, Mianyang 621000, China; 2. School of Mechanical Engineering, Northwestern Polytechnical University, Xi’an 710072, China) |
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Abstract As to disk-separated aero-engine rotor, blade arrangement affects initial unbalance of the rotor, and leads to vibration. During the rotor assembly process, precise and efficient blade arrangement is believed to improve assembly quality and efficiency. Aiming at this problem, a rotor initial unbalance model is built based on mass moment of a single blade. The fitness function of blade arrangement optimization is put forward. A searching algorithm is designed to make a trade-off between resource, time-consumption and optimization. Simulation and validation verify that blades could be distributed precisely and efficiently by using the proposed method. Compared with traditional methods, the initial unbalance is decreased dramatically, and the assembly quality is improved greatly. The pro-posed method has created valuable benefit in real assembly process.
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2020, 
