EXPERIMENTAL INVESTIGATION OF IMBIBED OPEN-CELL FOAMS UNDER REPETITIVE COMPRESSION

被引：0
|
作者：
Lupu, Georgian-Cristian [1 ]
Fătu, Aurelian [2 ]
Henry, Yann [2 ]
Nechita, Ionuț-Răzvan [3 ]
Cicone, Traian [3 ]
机构：
[1] Military Equipment and Technologies Research Agency, Romania
[2] Département Génie Mécanique et Systèmes Complexes, Institut PPRIME, CNRS – Université de Poitiers – ENSMA, UPR, 3346, France
[3] Machine Elements and Tribology Department, University POLITEHNICA of Bucharest, Romania
来源：
UPB Scientific Bulletin, Series D: Mechanical Engineering | 2023年 / 85卷 / 04期
关键词：
Cells - Cytology - Porous materials;
D O I：
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学科分类号：
摘要：
An original experimental test bench was developed to investigate the behaviour of fully imbibed soft, porous materials under repetitive compression. When fluid is squeezed out of the porous structure, under compression, its resistance to flow develops a high load capacity. This mechanism, specific to ex-poro-hydrodynamic lubrication (XPHD), depends on permeability variation with porosity. The influence of porosity, initial compression, and compression amplitude were investigated on two open-cell foams, subjected to several compression sequences with different frequencies. Preliminary results obtained with oil show that the capacity of open-cell foams to reabsorb the fluid during the return stroke reduces with the frequency, influencing the maximum pressure generated inside the porous matrix and limiting the potential benefits of the XPHD lubrication film. © 2023, Politechnica University of Bucharest. All rights reserved.
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页码：151 / 164
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