Quasi-static chain drive model for efficiency calculation - Application to track cycling

IF 4.5 1区 工程技术 Q1 ENGINEERING, MECHANICAL Mechanism and Machine Theory Pub Date : 2024-09-03 DOI:10.1016/j.mechmachtheory.2024.105780
G. Lanaspeze, B. Guilbert, L. Manin, F. Ville
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Abstract

Intense competition between top-level track cycling athletes rEq.uires research to make optimisation possible. In this context, the energetic efficiency of roller chain drives is studied to improve understanding of loss sources and to propose improvements. Losses in chain drives are mainly caused by the meshing/un-meshing process of chain links on the sprockets. However, a preliminary study shows that losses caused by the motion of rollers along their associated tooth profile have a significant influence. The aim of this paper is therefore to explore this phenomenon. An original 2D quasi static model of a two-sprocket drive is presented. The global drive kinematics (including transmission error) is determined using specific sub-models for the tight and slack strands. A local sprocket sub-model is then introduced to calculate link tension, roller/sprocket contact force and roller location. This model can be used for different tooth profile geometries. Based on the results provided by the global and local model, the presented model calculates drive efficiency, considering the losses caused by meshing and roller motion. A comparison with literature is done to ensure the model validity.

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用于效率计算的准静态链传动模型 - 轨道自行车的应用
顶级场地自行车运动员之间的激烈竞争需要进行研究,以实现优化。为此,我们对滚子链传动装置的能效进行了研究,以加深对损耗源的了解,并提出改进建议。链传动中的损耗主要由链条在链轮上的啮合/非啮合过程造成。然而,初步研究表明,滚子沿相关齿形运动造成的损耗也有很大影响。因此,本文旨在探讨这一现象。本文介绍了双链轮传动的原始二维准静态模型。全局传动运动学(包括传动误差)是通过紧链和松链的特定子模型确定的。然后引入局部链轮子模型来计算链节张力、滚子/链轮接触力和滚子位置。该模型可用于不同的齿形几何形状。根据全局和局部模型提供的结果,考虑到啮合和滚子运动造成的损失,所提出的模型计算了传动效率。为了确保模型的有效性,还与文献进行了比较。
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来源期刊
Mechanism and Machine Theory
Mechanism and Machine Theory 工程技术-工程:机械
CiteScore
9.90
自引率
23.10%
发文量
450
审稿时长
20 days
期刊介绍: Mechanism and Machine Theory provides a medium of communication between engineers and scientists engaged in research and development within the fields of knowledge embraced by IFToMM, the International Federation for the Promotion of Mechanism and Machine Science, therefore affiliated with IFToMM as its official research journal. The main topics are: Design Theory and Methodology; Haptics and Human-Machine-Interfaces; Robotics, Mechatronics and Micro-Machines; Mechanisms, Mechanical Transmissions and Machines; Kinematics, Dynamics, and Control of Mechanical Systems; Applications to Bioengineering and Molecular Chemistry
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