Degradation of Elastic Modulus of Progressively Crushable Foams in Uniaxial Compression

E.A. Flores-Johnson; Q.M. Li; R.A.W. Mines

doi:10.1177/0021955x08095113

journal article Sep 01, 2008

Degradation of Elastic Modulus of Progressively Crushable Foams in Uniaxial Compression

E.A. Flores-Johnson Q.M. Li R.A.W. Mines

Journal of Cellular Plastics Vol. 44 No. 5 pp. 415-434 · SAGE Publications

View at Publisher Save 10.1177/0021955x08095113

Abstract

The degradation of apparent modulus in progressively crushable foams in uniaxial compression is studied in this article based on an analysis of the measurement of engineering strain. It shows that the deformation mechanism of the progressive collapse of the foam causes the non-uniform deformation in the foam during uniaxial compression, which leads to the decrease of apparent elastic modulus with the increase of strain in the plateau stress regime. Theoretical predictions are compared with experimental results for different closed-cell polymeric foams with satisfactory agreement. It is also shown that this method is not applicable to the in-plane compression of honeycombs and the numerical modeling based on macroscopic constitutive equation is incapable of predicting the degradation of apparent modulus in progressively crushable foams.

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Details

Published: Sep 01, 2008
Vol/Issue: 44(5)
Pages: 415-434
License: View

Authors

E

E.A. Flores-Johnson

School of Mechanical, Aerospace and Civil Engineering The University of Manchester, Pariser Building Manchester M60 1QD, UK

Q

Q.M. Li

School of Mechanical, Aerospace and Civil Engineering The University of Manchester, Pariser Building Manchester M60 1QD, UK,

R

R.A.W. Mines

Impact Research Centre, Department of Engineering University of Liverpool, Liverpool, L69 3GH, UK

Cite This Article

E.A. Flores-Johnson, Q.M. Li, R.A.W. Mines (2008). Degradation of Elastic Modulus of Progressively Crushable Foams in Uniaxial Compression. Journal of Cellular Plastics, 44(5), 415-434. https://doi.org/10.1177/0021955x08095113

Degradation of Elastic Modulus of Progressively Crushable Foams in Uniaxial Compression

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