Fluid squeeze-out between solids with rough surfaces

TL;DR

This paper investigates the fluid squeeze-out process at the interface of elastic and rough rigid surfaces, with applications to tire-road contact and seal leakage, supported by experimental validation.

Contribution

It introduces a theoretical model for fluid squeeze-out between elastic and rough surfaces and compares it with experimental data.

Findings

The theory accurately predicts squeeze-out behavior.

Experimental results support the model's validity.

Implications for seal leakage are discussed.

Abstract

We study the fluid squeeze-out from the interface between an elastic solid with a flat surface and a rigid solid with a randomly rough surface. 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 data are presented to test the theory.