Influence of axis misalignments in stepped planetary gear stages on the excitation behavior—test rig development and simulative analysis

IF 1.1 4区工程技术 Q2 Engineering

Forschung Im Ingenieurwesen-Engineering Research Pub Date : 2023-09-13 DOI:10.1007/s10010-023-00709-z

Christian Westphal, Jens Brimmers, Christian Brecher

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Abstract

Abstract One challenge in the design of automotive gearboxes is the combination of high power density, high efficiency and low noise emission. With the electrification of the powertrain, the requirements in terms of noise emission and efficiency increase additionally. Stepped planetary gear stages are a potential topology to solve the current challenges in gearbox technology. Current research shows the pronounced misalignment behavior of planetary gear stages, especially with manufacturing or assembly deviations. However, the effects of dynamic misalignment behavior on tooth contacts in stepped planetary gear stages have not been adequately investigated. This paper presents a test rig that allows the investigation of the excitation and displacement behavior of stepped planetary gear stages taking into account adjustable axis misalignments. The axis misalignment of the stepped planetary shafts is introduced with eccentric bushings in this test rig concept. To evaluate the excitation and displacement behavior the transmission error and the displacements of different components can be measured. The test rig is modeled in the dynamic multibody simulation. The tooth contact is modeled using the force module GearForce6D. The axis misalignment is varied in the simulation model and the influence on the excitation and displacement behavior is evaluated. The simulation results show that planet pin position errors have the highest influence on the sun trajectory and the load sharing. The misalignments occurring in the tooth contacts due to inclination and skew of the stepped planetary shaft lead to higher tooth flank pressures and an increase in the total transmission error.

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阶梯式行星齿轮级轴向偏差对激振性能试验台研制及仿真分析的影响

高功率密度、高效率和低噪声是汽车变速箱设计面临的挑战之一。随着动力总成的电气化，对噪声排放和效率的要求也随之提高。阶梯式行星齿轮是解决当前齿轮箱技术挑战的一种潜在拓扑结构。目前的研究表明，行星齿轮阶段的显着不对准行为，特别是与制造或装配偏差。然而，动态不对准行为对阶梯式行星齿轮级齿接触的影响尚未得到充分的研究。本文提出了一种试验台，用于研究考虑可调轴偏差的阶梯式行星齿轮级的激励和位移行为。介绍了偏心轴套对阶梯式行星轴轴向偏差的影响。为了评估激励和位移行为，可以测量传动误差和不同部件的位移。在动态多体仿真中对试验台进行了建模。使用力模块GearForce6D对齿接触进行建模。在仿真模型中对轴向偏差进行了变化，并评估了轴向偏差对激励和位移行为的影响。仿真结果表明，行星销位置误差对太阳轨迹和载荷分担的影响最大。由于阶梯形行星轴的倾斜和歪斜导致齿面压力升高，总传动误差增加。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Forschung Im Ingenieurwesen-Engineering Research 工程技术-工程：机械

CiteScore

2.20

自引率

9.10%

发文量

审稿时长

>12 weeks

期刊介绍： This journal is aimed at those who require an interdisciplinary overview of current research in fundamental areas of engineering science as well as outstanding contributions in their own field. It intends to encourage an exchange of ideas between the areas of research and development. Submissions are subject to regular peer review by independent experts. Mainly contributions in German from all disciplines of engineering and technology will be considered for evaluation and publication.