Squeeze flow of soft solids between rough surfaces

On the optimisation of a texture analyser in squeeze flow geometry

“…For this, we consider simulated sticking squeeze flow data of a Newtonian fluid. Such a solution is known [7] and can be expressed in the reduced system F*(h/R) [6]. figure 9.…”

“…So, texture analysers are widely used in food and cosmetic laboratories, compare to rigid presses which are frequently used in other industries processing stiffer materials. Furthermore, the squeeze flow is relatively easy to perform and it is used increasingly as a means for measuring the biaxial extensional viscosity [4], the liquid-solid relative motion of pastes [5,6] and the rheological properties of many fluids [7]. It appears that the squeeze flow geometry is also an interesting alternative to shear rheological techniques, particularly for concentrated suspensions [1] and for sensitive fluids.…”

“…In addition, several analytical solutions of such a flow are proposed for different rheological behaviour and boundary conditions [4,[7][8][9][10][11][12][13]. In principle, this enable the computation of material properties by fitting experimental data with analytical solutions [7,10].…”

Caracterização reológica de argamassas colantes.

“…Nos experimentos realizados por Min, Erwin e Jennings (1994), o efeito médio do empuxo calculado tem um impacto de aproximadamente 15% a mais na interface placa superior/pasta.…”

“…Min, Erwin e Jennings (1994) sugerem que o efeito de uma força repulsiva da parede do molde poderia ser negligenciado em uma relação diâmetro / punção quando esta relação fosse superior que 1,7. Estas forças de repulsão são causadas pelo efeito "parede" durante a compressão.…”