Dynamic load analysis of the connecting bolts in a universal joint

IF 2.2 3区工程技术 Q2 ENGINEERING, MULTIDISCIPLINARY Eksploatacja I Niezawodnosc-Maintenance and Reliability Pub Date : 2022-02-26 DOI:10.17531/ein.2022.2.3

Yuchen An, Jing Liu, Z. Li

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Abstract

Dynamic loads of the connecting bolts in a universal joint can greatly affect the bolt fatigue and fracture, as well as the machinery safety and stability. But few researches focused on those. To obtain the dynamic load characteristics of the connecting bolts in a universal joint, this paper established a flexible dynamic model for the connecting bolts. A multibody dynamic model of a universal joint is developed. The dynamic loads on the connecting bolts of the universal joint are analyzed. The influences of the preloads, speeds and loads are studied. The amplitude and frequency properities are obtained. The effect of the preload is small when the preload is in the range of 80%~120% of the standard value. The load and speed have great influence on the time- and frequency-domain dynamic loads of the bolts. The flexible dynamic model of the connecting bolt is closer to the actual situation than the rigid model since it can consider the preload and deformation of the bolts. This study can provide guidance for the fatigue life prediction of the universal shaft and its bolts.

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万向节连接螺栓的动载荷分析

万向节连接螺栓的动载荷对螺栓的疲劳断裂和机械的安全稳定性有很大的影响。但很少有研究关注这些。为获得万向节连接螺栓的动载荷特性，建立了万向节连接螺栓的柔性动力学模型。建立了万向节的多体动力学模型。对万向节连接螺栓的动载荷进行了分析。研究了预紧力、速度和载荷对预紧力的影响。得到了其幅值和频率特性。预紧力在标准值的80%~120%范围内，预紧力的影响较小。载荷和速度对锚杆的时频域动载荷影响较大。连接螺栓的柔性动力学模型考虑了螺栓的预紧力和变形，比刚性模型更接近实际情况。该研究可为万向轴及其螺栓的疲劳寿命预测提供指导。

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来源期刊

Eksploatacja I Niezawodnosc-Maintenance and Reliability ENGINEERING, MULTIDISCIPLINARY-

CiteScore

5.70

自引率

24.00%

发文量

审稿时长

3 months

期刊介绍： The quarterly Eksploatacja i Niezawodność – Maintenance and Reliability publishes articles containing original results of experimental research on the durabilty and reliability of technical objects. We also accept papers presenting theoretical analyses supported by physical interpretation of causes or ones that have been verified empirically. Eksploatacja i Niezawodność – Maintenance and Reliability also publishes articles on innovative modeling approaches and research methods regarding the durability and reliability of objects.