人手指腹与光滑物体间的静摩擦力与湿度和抓持力的关系

为了研究人手指抓持表面光滑物体时静摩擦力与湿度和抓持力的关系，在本研究中设计并制作了一种可在被抓持物体的重量连续变化的条件下测量指腹变形、抓持力及摩擦力的装置. 在不同湿度和被抓持物体重量的条件下测量并分析了指腹变形及其与表面光滑物体之间的最大静摩擦系数，通过指腹变形量度量指腹与被抓持物体之间的黏着力，以此分析湿度对最大静摩擦系数的影响机理. 结果表明：最大静摩擦系数依存于抓持力，随抓持力的增加先呈负幂函数变化，然后稳定为一定值；湿度会影响指腹与被抓持物体之间的黏着力，从而影响抓持的最大静摩擦力；潮湿时黏着力最大，抓取表面光滑物体最省力且不易打滑；湿度对最大静摩擦系数的影响是非线性的，最大静摩擦系数随湿度的增加而增加，到达峰值后逐渐减小.To investigate the correlation among static friction, humidity and grasping force when human fingers grip smooth-surfaced objects, a device was designed and fabricated in this study. This device enables measurement of finger pad deformation, grasping force and frictional force under conditions where the weight of the gripped object varies continuously. Under varying humidity levels and gripped object weights, finger pad deformation and the maximum static friction coefficient between the finger pad and smooth-surfaced objects were measured and analyzed. The adhesion force between the finger pad and the gripped object was quantified using the magnitude of finger pad deformation, thereby analyzing the mechanism by which humidity affects the maximum static friction coefficient. The results demonstrate that: the maximum static friction coefficient is dependent on grasping force, first varying as a negative power function with increasing grasping force, then stabilizing to a constant value; humidity affects the adhesion force between the finger pad and the gripped object, which in turn influences the maximum static friction force during grasping; under humid conditions, the adhesion force reaches its maximum, making the grasping of smooth-surfaced objects most effortless and less prone to slipping; the effect of humidity on the maximum static friction coefficient is nonlinear, with the maximum static friction coefficient increasing with rising humidity before gradually decreasing after reaching a peak.

搜集汇总

背景与挑战

背景概述

该数据集研究了人手指腹与光滑物体间静摩擦力与湿度、抓持力的关系，通过实验装置测量指腹变形、抓持力和摩擦力，分析发现最大静摩擦系数随抓持力增加先呈负幂函数变化后稳定，湿度通过影响黏着力非线性地影响最大静摩擦力，潮湿时最省力且防滑效果最佳。