论文标题
研究滚动摩擦对球轴承半径的依赖
Research on rolling friction's dependence on ball bearings' radius
论文作者
论文摘要
法国科学家Coulomb和Dupuit提出了两种替代历史定律。已经决定再次实验验证，这些定律中的哪个描述了在硬表面上自由滚动的滚珠轴承。进行测量的诱导是路基的持续厚度的概念，这与dupuit理论一致。使用摆轴承中的阻尼振荡进行了测量。结果表明，与库仑理论的一致性更好，但具有较小但可测量的偏差。这些偏差通过所谓的“鹅卵石模型”成功解释。该模型指定的参数已通过表面粗糙度的轮廓测量成功验证。这项工作的另一个理论方面是区分两种类型的滚动摩擦力：动力学和运动学与气体热力学中两种特定热容量的类型。
There are two alternative historical laws of rolling resistance formulated by French scientist Coulomb and Dupuit. It has been decided to verify experimentally again, which of these laws describes freely rolling ball bearings on a hard surface better. An inducement to carrying out the measurements was the idea of the constant thickness of roadbed, which is consistent with Dupuit's theory. Measurements have been done using the damped oscillations in the pendulum bearings. Results have shown better consistency with the Coulomb's theory with small, but measurable deviations. These deviations were successfully explained by the so called "Cobblestones model". Parameters designated by this model have been successfully verified by the surface roughness's profile measurement. An additional theoretical aspect of this work is distinguishing two types of rolling friction force: dynamical and kinematical in an analogy to two types of specific heat capacity in the thermodynamics of gases.
