以某舰载涡桨发动机动力涡轮转子为研究对象，基于动力学相似设计原则设计了与真实转子动力特性一致的模拟转子，并验证了动力学相似设计的正确性。提出一种冲击载荷下转子振动特性试验方法，在振动台上开展高速电机抗冲击性能和转子在冲击载荷下的振动特性试验研究，验证了高速电机具备不低于10g的垂向抗冲击性能，提取了转子在冲击载荷下的瞬态振动响应，获取了冲击时振动响应主要频率成分。研究表明模拟转子动力特性与真实转子具有良好一致性，冲击时振动响应基频不变，但存在较复杂的其他频率成分。研究为某舰载涡桨发动机的研制提供了技术支持，为转子在冲击载荷下的动力学试验提供了方法。
Abstract
Taking the power turbine rotor of a shipborne turboprop engine as the research object, a simulated rotor with the same dynamic characteristics as the real rotor of the engine was designed based on the principle of dynamic similarity, and the correctness of dynamic similarity design was verified. A test method for the vibration characteristics of aeroengine rotor under impact load was proposed. The research on the impact resistance of high-speed motor and the vibration characteristics of rotor under the impact load was carried out on the vibration table. The high-speed motor and rotor have a vertical impact resistance of no less than 10g. The transient vibration response and the main frequency components of vibration response of the rotor under impact load were obtained. The research results show that the dynamic characteristics of the designed simulated rotor are basically consistent with the real rotor in engine. The research provides technical support for the development of a shipborne turboprop engine, and also provides a reference for the dynamic test of rotor under large impact load.
关键词
舰载涡桨发动机 /
高速电机 /
瞬态振动响应 /
振动特性 /
冲击载荷
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Key words
shipborne turboprop /
high-speed motor /
transient vibration response /
vibration characteristics /
impact load
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