Experimental study on fingertip friction perception characteristics on ridged surfaces

IF 1 4区工程技术 Q4 ENGINEERING, MECHANICAL Mechanical Sciences Pub Date : 2023-10-25 DOI:10.5194/ms-14-463-2023

Liyong Wang, Li Yang, Le Li, Jianpeng Wu, Qian Zou

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Abstract

Abstract. Fingertip friction perception characteristics have not formed a clear and complete theory, owing to the low repeatability and accuracy of related experiments. Given this, a novel experimental method is proposed based on ridged surfaces for investigating the fingertip friction perception characteristics. In this method, based on the Universal Mechanical Tester (UMT) TriboLab, the proposed experiment makes subjects touch ridged surfaces under different ridge sizes and lubrication conditions, aiming to obtain fingertip friction and subject judgment. Subsequently, the average friction force fluctuation degree and the tactile perception accuracy are calculated to analyze the friction characteristics. For this, the relationship between friction and perception characteristics is discussed further. The results show that the adhesive and the deformation friction forces, which mainly consist of the total friction force under incomplete contact conditions, decrease due to the lubricating oil. However, the adhesive friction force increases slightly as the ridge widens. In addition, when the ridge spacing is raised, the deformation friction force increases and becomes the dominant component, while the adhesive friction force is the opposite. While analyzing the friction characteristics, it is found that the tactile perception accuracy is enhanced by raising the average friction force fluctuation. Moreover, the tactile perception accuracy can be improved by changing the surface texture and lubrication conditions, due to the changes in fingertip friction characteristics.

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脊状表面指尖摩擦感知特性的实验研究

摘要由于相关实验的重复性和准确性较低，指尖摩擦感知特性尚未形成清晰完整的理论。为此，提出了一种基于脊状表面的指尖摩擦感知实验方法。该方法基于通用机械测试仪TriboLab，在不同的脊大小和润滑条件下，让受试者触摸脊状表面，以获得指尖摩擦和受试者判断。然后，计算平均摩擦力波动度和触觉感知精度，分析摩擦特性。为此，进一步讨论了摩擦与感知特性之间的关系。结果表明:在不完全接触条件下，主要由总摩擦力组成的粘着力和变形摩擦力由于润滑油的加入而减小;然而，黏着摩擦力随着脊线的加宽略有增加。此外，当脊间距增加时，变形摩擦力增加并成为主导分量，而粘着摩擦力则相反。在分析摩擦特性的同时，发现增大平均摩擦力波动可以提高触觉感知精度。此外，由于指尖摩擦特性的改变，可以通过改变表面纹理和润滑条件来提高触觉感知精度。

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来源期刊

Mechanical Sciences ENGINEERING, MECHANICAL-

CiteScore

2.20

自引率

7.10%

发文量

审稿时长

29 weeks

期刊介绍： The journal Mechanical Sciences (MS) is an international forum for the dissemination of original contributions in the field of theoretical and applied mechanics. Its main ambition is to provide a platform for young researchers to build up a portfolio of high-quality peer-reviewed journal articles. To this end we employ an open-access publication model with moderate page charges, aiming for fast publication and great citation opportunities. A large board of reputable editors makes this possible. The journal will also publish special issues dealing with the current state of the art and future research directions in mechanical sciences. While in-depth research articles are preferred, review articles and short communications will also be considered. We intend and believe to provide a means of publication which complements established journals in the field.