Subsonic to Intersonic Transition in Sliding Friction for Soft Solids
Subsonic to Intersonic Transition in Sliding Friction for Soft Solids
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软固体滑动摩擦中的亚音速到间音速的转变
DOI：
10.1103/physrevlett.124.238001
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发表时间：
2020
影响因子：
8.6
通讯作者：
Yamaguchi Tetsuo
中科院分区：
文献类型：
--
作者：
Yashiki Takuya;Morita Takehiro;Sawae Yoshinori;Yamaguchi Tetsuo
我们进行摩擦实验之间的一个顺应性的凝胶和一个刚性的圆柱体在滑动速度相媲美的瑞利波或二次波速度的凝胶。我们发现，当滑动速度超过波的速度，接触状态从赫兹类过渡到平冲头类，导致润滑油膜的破裂和摩擦系数的突然增加。我们成功地推导出理论解的接触压力分布和变形轮廓存在的摩擦，这是与我们的实验观察。
We perform friction experiments between a compliant gel and a rigid cylinder at sliding velocities comparable to the Rayleigh wave or secondary wave velocity of the gel. We find that, when the sliding velocity exceeds the wave velocities, the contact state transitions from Hertzian like to flat punch like, resulting in the breakdown of the lubricating oil film and the abrupt increase in the friction coefficient. We succeed in deriving theoretical solutions for the contact pressure distributions and the deformation profiles in the presence of friction, which are consistent with our experimental observations.