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 language | English |
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Pages (from-to) | 1609-1614 |
Number of pages | 6 |
Journal | Procedia Engineering |
Volume | 10 |
DOIs | |
Publication status | Published - 2011 |
Keywords
- Brittle fracture
- Buckling
- Elastic deformation
- Polymeric foam
ASJC Scopus subject areas
- Engineering(all)