文章基本信息

标题：A Coupled Helicopter Rotor/Fuselage Dynamics Model Using Finite Element Multi-body
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作者：Qi-you Cheng ; Qi-you Cheng ; Yan Zhu 等
期刊名称：MATEC Web of Conferences
电子版ISSN：2261-236X
出版年度：2016
卷号：77
页码：1-4
DOI：10.1051/matecconf/20167701016
语种：English
出版社：EDP Sciences
摘要：To develop a coupled rotor/flexible fuselage model for vibration reduction studies, the equation of coupled rotor-fuselage is set up based on the theory of multi-body dynamics, and the dynamic analysis model is established with the software MSC.ADMAS and MSC.NASTRAN. The frequencies and vibration acceleration responses of the system are calculated with the model of coupled rotor-fuselage, and the results are compared with those of uncoupled modeling method. Analysis results showed that compared with uncoupled model, the dynamic characteristic obtained by the model of coupled rotor-fuselage are some different. The intrinsic frequency of rotor is increased with the increase of rotational velocities. The results also show that the flying speed has obvious influence on the vibration acceleration responses of the fuselage. The vibration acceleration response in the vertical direction is much higher at the low speed and high speed flight conditions.