Modeling of failure mechanisms using the true stress-strain response of polymeric foam materials

B. H. Choi, A. Chudnovsky, K. Sehanobish

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Polymeric foams are widely used in various engineering applications. Understanding and quantitative modeling of foam load-displacement behavior is important for design and development of engineering structures with foams. In this paper we analyze three main micro-mechanisms of foam macroscopic deformation and failure using stress-true-strain diagram of loading cycle. Specifically, connection between 1) large reversible deformation and buckling, 2) large elasto-plastic deformation and 3) brittle fracture of individual cell structural elements on one side and macroscopic foam behavior on the other is discussed. Identification of specific micro-mechanism responsible for macroscopic behavior foam is suggested on the basis of detailed analysis of unloading part of stress-true strain diagram, i.e., strain recovery process.

Original languageEnglish
Pages (from-to)1609-1614
Number of pages6
JournalProcedia Engineering
Volume10
DOIs
Publication statusPublished - 2011

Keywords

  • Brittle fracture
  • Buckling
  • Elastic deformation
  • Polymeric foam

ASJC Scopus subject areas

  • Engineering(all)

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