Dynamic modeling and vibration analysis of spur gear system considering thin-walled gear and hollow shaft
Dynamic modeling and vibration analysis of spur gear system considering thin-walled gear and hollow shaft
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DOI：
10.1016/j.mechmachtheory.2022.105197
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发表时间：
2023-03
影响因子：
5.2
通讯作者：
Xiannian Kong;Jinyuan Tang;Zehua Hu;H. Ding;Zhiwei Wang-;Qibo Wang
中科院分区：
文献类型：
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作者：
Xiannian Kong;Jinyuan Tang;Zehua Hu;H. Ding;Zhiwei Wang-;Qibo Wang
本文提出了一种考虑薄壁齿轮和空心轴的齿轮动力学模型。采用壳单元代替梁单元和集中质量单元建立齿轮轴有限元模型。分析了传统动力学模型的不足和薄壁空心轴的影响。数值结果表明，传统动力学模型的简化策略会丢失多个重要的模态信息，并导致临界转速过高。该模型在高速区域获得了额外的谐振频率。然而，传统模型由于简化了薄壁结构特征而失去了这一现象。空心轴与梁模型的等效性要求有小径厚比的条件。否则，将导致预测振动特性的偏差。该模型可为高速轻量化齿轮传动系统的高性能设计和减振降噪提供理论依据。
This paper proposes a gear dynamic model considering the thin-walled gear and hollow shaft. The shell element is adopted to establish the gear-shaft finite element model instead of using the beam element and lumped mass element. The shortcomings of the traditional dynamic model and the influences of thin-walled hollow shafts are analyzed. Numerical results show that the simplification strategy of the traditional dynamic model will lose several vital modal information and evaluate excessive critical speeds. The proposed model obtains the extra resonant frequency in the high-speed region. However, the traditional model loses this phenomenon due to the simplified thin-walled structural features. The equivalence of the hollow shaft to a beam model requires the condition of a small radius-thickness ratio. Otherwise, it will lead to deviations in the predicted vibration characteristics. The proposed model helps to provide a theoretical basis for high-performance design and vibration and noise reduction of high-speed and lightweight gear transmission systems.