An improved dynamic model of the spline coupling with misalignment and its load distribution analysis

IF 2.7 3区材料科学 Q2 ENGINEERING, MECHANICAL International Journal of Mechanics and Materials in Design Pub Date : 2023-09-21 DOI:10.1007/s10999-023-09681-6

Chao Zhang, Rupeng Zhu, Weifang Chen, Dan Wang, Xunmin Yin, Duo Song

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Abstract

Spline couplings allow for a certain amount of misalignment and relative sliding between their internal and external components. However, the misalignment could cause serious uneven load distribution and aggravate the wear of a spline coupling. So far, the effects of misalignment on the load distribution of the spline coupling aren't fully understood. To solve the above problem, an improved dynamic model of the spline coupling is established, which introduces the static misalignment caused by installation and manufacturing errors and the dynamic misalignment introduced by the dynamic vibration displacement between the internal and external splines. The classical potential energy method is adopted to derive the meshing stiffness, and then the equivalent stiffness and meshing excitation force of the spline coupling with misalignment is obtained. The accuracy of the method proposed has been proved by software. The load distribution of the spline coupling with various misalignments is studied. The results show that: the misalignment would cause serious uneven load distribution, especially the static parallel misalignment. Meanwhile, the dynamic misalignment has a small effect on the load distribution, which can be ignored during load distribution analysis. The improved model can be widely applied to rotor systems connected by spline couplings.

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花键联轴器错位改进动态模型及其载荷分布分析

花键联轴器允许其内部和外部组件之间存在一定程度的错位和相对滑动。然而，不对中会导致严重的载荷分布不均，加剧花键联轴器的磨损。迄今为止，人们还不完全了解不对中对花键联轴器载荷分布的影响。为解决上述问题，本文建立了花键联轴器的改进动态模型，引入了由安装和制造误差引起的静态不对中和由内外花键之间的动态振动位移引起的动态不对中。采用经典势能法推导啮合刚度，进而得到存在错位的花键联轴器的等效刚度和啮合激振力。所提方法的准确性已通过软件得到证明。研究了花键联轴器在不同错位情况下的载荷分布。结果表明：不对中会导致严重的载荷分布不均，尤其是静态平行不对中。同时，动态不对中对载荷分布的影响较小，在载荷分布分析中可以忽略。改进后的模型可广泛应用于通过花键联轴器连接的转子系统。

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来源期刊

International Journal of Mechanics and Materials in Design ENGINEERING, MECHANICAL-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

6.00

自引率

5.40%

发文量

审稿时长

>12 weeks

期刊介绍： It is the objective of this journal to provide an effective medium for the dissemination of recent advances and original works in mechanics and materials'' engineering and their impact on the design process in an integrated, highly focused and coherent format. The goal is to enable mechanical, aeronautical, civil, automotive, biomedical, chemical and nuclear engineers, researchers and scientists to keep abreast of recent developments and exchange ideas on a number of topics relating to the use of mechanics and materials in design. Analytical synopsis of contents: The following non-exhaustive list is considered to be within the scope of the International Journal of Mechanics and Materials in Design: Intelligent Design: Nano-engineering and Nano-science in Design; Smart Materials and Adaptive Structures in Design; Mechanism(s) Design; Design against Failure; Design for Manufacturing; Design of Ultralight Structures; Design for a Clean Environment; Impact and Crashworthiness; Microelectronic Packaging Systems. Advanced Materials in Design: Newly Engineered Materials; Smart Materials and Adaptive Structures; Micromechanical Modelling of Composites; Damage Characterisation of Advanced/Traditional Materials; Alternative Use of Traditional Materials in Design; Functionally Graded Materials; Failure Analysis: Fatigue and Fracture; Multiscale Modelling Concepts and Methodology; Interfaces, interfacial properties and characterisation. Design Analysis and Optimisation: Shape and Topology Optimisation; Structural Optimisation; Optimisation Algorithms in Design; Nonlinear Mechanics in Design; Novel Numerical Tools in Design; Geometric Modelling and CAD Tools in Design; FEM, BEM and Hybrid Methods; Integrated Computer Aided Design; Computational Failure Analysis; Coupled Thermo-Electro-Mechanical Designs.