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Influence of shaft torsional stiffness on natural characteristics of four-stage main transmission system in three-engine helicopter

Influence of shaft torsional stiffness on natural characteristics of four-stage main transmission system in three-engine helicopter
Influence of shaft torsional stiffness on natural characteristics of four-stage main transmission system in three-engine helicopter

Four-stage main helicopter transmission system occupies several strong points like good carrying capacity and is addressed by many scholars. However, the influence of variable parameters on natural characteristics in a three-engine helicopter, is not to be investigated, according to the limited published issues. Thus, in the study, a vibration model of the four-stage main helicopter transmission system is established through the lumped mass method. In the model, many factors, including time-varying meshing stiffness and torsional stiffness of gear shaft are considered. The differential equation of the system is solved via the Fourier method, 27-orders natural frequency and modal shape corresponded by each degree of freedom (DOF) of the system are obtained. The influence of the shaft torsional stiffness on the first five orders of the system natural frequency is studied. Besides, the impact of the matching relationship of key shafts’ torsional stiffness on the system stability is analyzed. These contributions would improve modification developments of four-stage deceleration helicopter in future.

Four-stage reducer, Helicopter transmission system, Natural characteristics, Torsional stiffness
1392-8716
1955-1965
Chen, Yuan
77302fa5-7cf8-461a-9c60-9ce608590246
Zhu, Ru Peng
cab2bd69-3e29-4459-a1ed-e8c5e5876d36
Xiong, Ye Ping
51be8714-186e-4d2f-8e03-f44c428a4a49
Jin, Guang Hu
71a612f4-09c0-40a4-80d4-6616f1fc8610
Chen, Yuan
77302fa5-7cf8-461a-9c60-9ce608590246
Zhu, Ru Peng
cab2bd69-3e29-4459-a1ed-e8c5e5876d36
Xiong, Ye Ping
51be8714-186e-4d2f-8e03-f44c428a4a49
Jin, Guang Hu
71a612f4-09c0-40a4-80d4-6616f1fc8610

Chen, Yuan, Zhu, Ru Peng, Xiong, Ye Ping and Jin, Guang Hu (2018) Influence of shaft torsional stiffness on natural characteristics of four-stage main transmission system in three-engine helicopter. Journal of Vibroengineering, 20 (5), 1955-1965. (doi:10.21595/jve.2018.18867).

Record type: Article

Abstract

Four-stage main helicopter transmission system occupies several strong points like good carrying capacity and is addressed by many scholars. However, the influence of variable parameters on natural characteristics in a three-engine helicopter, is not to be investigated, according to the limited published issues. Thus, in the study, a vibration model of the four-stage main helicopter transmission system is established through the lumped mass method. In the model, many factors, including time-varying meshing stiffness and torsional stiffness of gear shaft are considered. The differential equation of the system is solved via the Fourier method, 27-orders natural frequency and modal shape corresponded by each degree of freedom (DOF) of the system are obtained. The influence of the shaft torsional stiffness on the first five orders of the system natural frequency is studied. Besides, the impact of the matching relationship of key shafts’ torsional stiffness on the system stability is analyzed. These contributions would improve modification developments of four-stage deceleration helicopter in future.

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JVE-20-5-18867 - Version of Record
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More information

Accepted/In Press date: 30 March 2018
e-pub ahead of print date: 15 August 2018
Published date: 15 August 2018
Keywords: Four-stage reducer, Helicopter transmission system, Natural characteristics, Torsional stiffness

Identifiers

Local EPrints ID: 424118
URI: http://eprints.soton.ac.uk/id/eprint/424118
ISSN: 1392-8716
PURE UUID: 3139f8d3-2495-4e60-9e3c-79dc99806fad
ORCID for Ye Ping Xiong: ORCID iD orcid.org/0000-0002-0135-8464

Catalogue record

Date deposited: 04 Oct 2018 16:30
Last modified: 07 Oct 2020 01:45

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