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Dynamics Modeling and Response Analysis of Gear-screw Actuators of Tiltrotor Aircrafts

Authors :
Wang Cheng
Li Zhengminqing
Sheng Wei
Pan Dongling
Source :
Jixie chuandong, Vol 48, Pp 8-15 (2024)
Publication Year :
2024
Publisher :
Editorial Office of Journal of Mechanical Transmission, 2024.

Abstract

The tilting mechanism of a tiltrotor aircraft is a complex structure comprised of gear pairs and ball screw pairs, with its dynamic challenges being particularly prominent. To precisely analyze its dynamic behavior and uncover the vibration mechanism, a dynamic coupling modeling method for a gear-ball screw actuator system was proposed. In this method, the impact excitation from the ball screw pair and the quasi-static transmission errors from the gear pair were considered. By solving the eigenvalue problem based on the system's dynamic equations, the natural frequencies and modes were determined. A comparison with the finite element modal analysis results confirmed the accuracy of the theoretical model. On this basis, an analysis of the dynamic behavior of the gear-ball screw actuator system was conducted, along with an exploration of the influence of structural parameters of the ball screw pairs on the output response. The results show that the axial vibration response of the ball screw decreases with an increase in the helix angle, while it follows a trend of initial increase followed by decrease with an increase in the contact angle.

Details

Language :
Chinese
ISSN :
10042539
Volume :
48
Database :
Directory of Open Access Journals
Journal :
Jixie chuandong
Publication Type :
Academic Journal
Accession number :
edsdoj.8c0dac3a998f45f3b0e3e55ca0a73086
Document Type :
article
Full Text :
https://doi.org/10.16578/j.issn.1004.2539.2024.11.002