Stress and Energy Absorption of Open-Celled Foam Under Elastic Compression
When open-celled foam is compressed, its compressive stress is relative to the solid matrix deformation and the entrapped fluid flow. In this paper, both the influence of compression on porosity, relative density, pore diameter and the influence of inertia of entrapped fluid are included for developing its compressive stress. The compressive stresses of prediction and experiment are in good agreement when open-celled foam sample is compressed in air and in aqueous solution of glycerin, respectively. During compression, the energy absorbed by open-celled foam is also relative to its solid matrix deformation and entrapped fluid flow. If open-celled foam is compressed in thin and light medium, such as air, its compressive stress and absorbed energy are dominated significantly by the stress due to solid matrix deformation. If it is compressed in thick and heavy medium, such as aqueous solution of glycerin, the inertia of entrapped fluid influences significantly on its compressive stress and energy absorption.
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Document Type: Research Article
Publication date: March 1, 2012
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