Effects of internal pore pressure on closed-cell elastomeric foams

Oscar Lopez-Pamies, Pedro Ponte Castañeda, Martín I. Idiart

Research output: Contribution to journalArticle

Abstract

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 Castañeda, 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.

Original languageEnglish (US)
Pages (from-to)2793-2798
Number of pages6
JournalInternational Journal of Solids and Structures
Volume49
Issue number19-20
DOIs
StatePublished - Oct 1 2012

Keywords

  • Elastomers
  • Microstructures
  • Porosity
  • Pressure

ASJC Scopus subject areas

  • Modeling and Simulation
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Applied Mathematics

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