期刊
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
卷 49, 期 19-20, 页码 2793-2798出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijsolstr.2012.02.024
关键词
Elastomers; Porosity; Pressure; Microstructures
类别
资金
- National Science Foundation [NSF/DMS-1009503]
- CONICET (Argentina) [PIP 00394/10]
- Division Of Mathematical Sciences
- Direct For Mathematical & Physical Scien [1242089] Funding Source: National Science Foundation
A micromechanics framework for porous elastomers with internal pore pressure (Idiart and Lopez-Pamies, 2012) is used together with an earlier homogenization estimate for elastomers containing vacuous pores (Lopez-Pamies and Ponte Castaneda, 2007a) to investigate the mechanical response and stability of closed-cell foams. Motivated by applications of technological interest, the focus is on isotropic foams made up of a random isotropic distribution of pores embedded in an isotropic matrix material, wherein the initial internal pore pressure is identical to the external pressure exerted by the environment (e.g. atmospheric pressure). It is found that the presence of internal pore pressure significantly stiffens and stabilizes the response of elastomeric foams, and hence that it must be taken into account when modeling this type of materials. (C) 2012 Elsevier Ltd. All rights reserved.
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