Time-dependent fluid squeeze-out between solids with rough surfaces
Time-dependent fluid squeeze-out between solids with rough surfaces
复制标题
具有粗糙表面的固体之间随时间变化的流体挤出
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
Bo N. J. Persson
中科院分区：
文献类型：
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作者：
B. Lorenz;Bo N. J. Persson
摘要：我们研究了在流体中挤压在一起的具有平面的弹性固体和具有随机粗糙表面的刚性固体之间的(平均)界面分离的时间依赖性。作为应用，我们讨论了轮胎胎面块和路面之间的液体挤压。讨论了对密封泄漏的一些影响，并给出了实验结果以验证理论。理论预测的泄漏率作为流体压差的函数与实验数据很好地符合所有的流体压力直到“起飞”，其中流体压力等于名义橡胶基板挤压压力。
Abstract.We study the time dependency of the (average) interfacial separation between an elastic solid with a flat surface and a rigid solid with a randomly rough surface, squeezed together in a fluid. As an application we discuss fluid squeeze-out between a tire tread block and a road surface. Some implications for the leakage of seals are discussed, and experimental results are presented to test the theory. The theoretical prediction for the leak rate as a function of the fluid pressure difference is in good agreement with the experimental data for all fluid pressures up to “lift-off”, where the fluid pressure equals the nominal rubber-substrate squeezing pressure.