Analysis of the aircraft gas turbine engine spline coupling with the finite element method and taking into account the loads and the misalignment influence
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.
References
[1] Cura F., Mura A., Gravina M. Load distribution in spline coupling teeth with parallel offset misalignment. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2012, vol. 227, pp. 2195–2205. https://doi.org/10.1177/0954406212471916
[2] Yunbo Hu1, Huibin Wang, Yuanqiang Tan, Likuan Jiang, Shengqiang Jiang. Study on the meshing force of misaligned gear coupling. In: International Forum on Mechanical, Control and Automation (IFMCA 2016), vol. 113, pp. 452–458.
[3] Jinyi Bai, Wenjing Wang, Pingyu Zhou ,Yuguang Wang. Dynamic simulation analysis on axle spline of high-speed train gauge-change system. Shock and Vibration, vol. 2021 (4), pp. 1–19. https://doi.org/10.1155/2021/8866405
[4] Cura F., Mura A. Analysis of a load application point in spline coupling teeth. Journal of Zhejiang University-SCIENCE A, 2014, vol. 15 (4), pp. 302–308.
[5] Jianping Jing, Teng Gao, Changmin Chen. The study on spline coupling dynamic coefficients and its impact on rotor stability. ICSV23, 2016, pp. 3390–3398.
[6] Zezeng Dai, Jianping Jin, Changmin Chen, Jiqing Cong. Extensive experimental study on the stability of rotor system with spline coupling. ASME Turbo Expo, 2018, 11 p.
[7] Cuffaro V., Cura F., Mura A. Analysis of the pressure distribution in spline couplings. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2012, vol., 226, pp. 2852–2859. https://doi.org/10.1177/0954406212440670
[8] Khronin D.V. Teoriya i raschet kolebaniya v dvigatelyakh letatelnykh apparatov [Theory and calculation of vibrations in the aircraft engines]. Moscow, Mashinostroenie Publ., 1950, 359 p.
[9] Xiangzhen Xue, Qixin Huo, Jian Liu, Jipeng Jia. Nonlinear dynamic load analysis of aviation spline coupling with mass eccentricity and misalignment. Advances in Mechanical Engineering, 2021, vol. 13 (2), 19 p.
[10] Xiangzhen Xue, Qixin Huo, Jian Liu. Nonlinear vibration characteristic of the involute spline coupling in aeroengine with the parallel misalignment. International Journal of Aerospace Engineering, vol. 2021, 19 p.
[11] Gupta T.C., Gupta K. Modeling of flexible coupling to connect misalignment flexible rotors supported on ball bearing. Proceedings of ASME Turbo Expo 2014, 2014, 14 p.
[12] Xiangang Su, Hong Lu, Xinbao Zhang, Wei Fan, Yongquan Zhang. Analysis of dynamic characteristic for misalignment-spline gear shaft based on whole transfer matrix method. Journal of Vibroenineering, May 2018, vol. 20, issue 3, pp. 1392–1408.
[13] OST 1-00086–73. Soedineniya zubchatye (shlitsevye) evolventnye [Tooth (spline) involute couplings]. 32 p.
[14] Cura F., Mura A. Experimental and theoretical investigation about reaction moments in misaligned splined couplings. Mechanical Systems and Signal Processing, 2014, vol. 45, pp. 504–512.
[15] Luciano D.I. Analisi F.E.M. Su accoppiamenti scanalati: Tilting Moment e Friction Moment. Politecnico di Torino, 2020, 106p.