Note and calculations concerning elastic dilatancy in 2D glass-glass liquid foams

TL;DR

This paper investigates elastic dilatancy in 2D glass-glass liquid foams, extending previous geometric interpretations from dry and 3D foams to less dry regimes, emphasizing significant dilatancy effects and rapid Plateau border variations.

Contribution

It provides a geometric analysis of elastic dilatancy in less dry 2D glass-glass foams, complementing prior work on dry and 3D foams, and predicts strong dilatancy effects.

Findings

Strong dilatancy effects in less dry 2D foams

Rapid variations in Plateau borders predicted

Extension of geometric interpretation to new foam regimes

Abstract

When deformed, liquid foams tend to raise their liquid contents like immersed granular materials, a phenomenon called dilatancy. We have aready described a geometrical interpretation of elastic dilatancy in 3D foams and in very dry foams squeezed between two solid plates (2D GG foams). Here, we complement this work in the regime of less dry 2D GG foams. In particular, we highlight the relatively strong dilatancy effects expected in the regime where we have predicted rapid Plateau border variations.