Certificate of Registration Media number Эл #ФС77-53688 of 17 April 2013. ISSN 2308-6033. DOI 10.18698/2308-6033
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Analysis of the aircraft gas turbine engine spline coupling with the finite element method and taking into account the loads and the misalignment influence

Published: 27.11.2023

Authors: Nikolaev I.V., Leontiev M.K., Popov V.V., Nizametdinov F.R.

Published in issue: #11(143)/2023

DOI: 10.18698/2308-6033-2023-11-2315

Category: Aviation and Rocket-Space Engineering | Chapter: Thermal, Electric Jet Engines, and Power Plants of Aircrafts

Widespread use of the involute spline couplings in design of the aircraft gas turbine engines leads to certain requirements to be taken into account, for example, various factors influencing characteristics of such couplings in calculation and analysis. When considering the involute spline coupling as part of the gas turbine engine rotor system, the analysis should consider a number of phenomena. They include radial and angular misalignments, as well as gaps on the coupling side surfaces, since they could lead to various undesirable effects, i.e. alterations in the engagement force, moment and radial stiffness, and in the increasing vibrations amplitude. These factors are able to significantly influence the dynamic behavior of a system with a spline being a part. The work analyzes the involute spline coupling with a gap along the side surfaces and notes the need to take into account the gap under the action of various loads. Besides, the spline operation at a misalignment was studied.

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