Coupling Dynamic Characteristics Analysis of a Dual-Rotor Aeroengine

Xiaofei Ding, Mingfu Liao, Zengde Shao, Yixiong Liu

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

Aiming at the typical dual aeroengine with inter-shaft bearing, the dual-rotor dynamic analysis model was established. The dynamic characteristics induced by the high pressure rotor excitation of the co-rotating, counter-rotating system and the inter-shaft bearing were thoroughly analyzed. Results show that the critical speed of the co-rotating system was much higher than the counter-rotating system, resulting from the gyroscopic moment. Consequently, the rotor strain energy was lower and the rotor unbalance would generate lower dynamic response at critical speed. More importantly, the critical speed of high pressure rotor and low pressure rotor coupling mode (HLCM) would lead to the dramatic increase of coupling vibration. To be specific, the shaft axis locus demonstrated an obvious petal-like shape and the reaction force of the inter-shaft bearing rose significantly. The findings highlight the importance of maintaining sufficient margin between the critical speed of HLCM and the engine operating speed during the rotor dynamic characteristics design.

源语言英语
主期刊名2023 Asia-Pacific International Symposium on Aerospace Technology, APISAT 2023, Proceedings - Volume I
编辑Song Fu
出版商Springer Science and Business Media Deutschland GmbH
62-72
页数11
ISBN(印刷版)9789819739974
DOI
出版状态已出版 - 2024
活动Asia-Pacific International Symposium on Aerospace Technology, APISAT 2023 - Lingshui, 中国
期限: 16 10月 202318 10月 2023

出版系列

姓名Lecture Notes in Electrical Engineering
1050 LNEE
ISSN(印刷版)1876-1100
ISSN(电子版)1876-1119

会议

会议Asia-Pacific International Symposium on Aerospace Technology, APISAT 2023
国家/地区中国
Lingshui
时期16/10/2318/10/23

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