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- Title
The mechanical response of Rohacell foams at different length scales.
- Authors
Arezoo, S.; Tagarielli, V. L.; Petrinic, N.; Reed, J. M
- Abstract
The quasi-static mechanical response of polymethacrylimide (PMI) foams of density ranging from 50 to 200 kg m is investigated in order to provide experimental data to inspire and validate numerical constitutive models for the response of polymer foams. The macroscopic mechanical response is characterised by conducting quasi-static compression, tension, shear and indentation experiments, whereas microscopic deformation mechanisms are identified by conducting in situ SEM observations during static compression and tension tests; it is shown that foams of low density collapse by cell wall buckling while foams of high density undergo plastic cell-wall bending. As a result, both the elastic and plastic macroscopic response of the foam display a tension/compression asymmetry.
- Subjects
MECHANICAL properties of polymers; FOAM; DEFORMATIONS (Mechanics); DENSITY; FLEXURE
- Publication
Journal of Materials Science, 2011, Vol 46, Issue 21, p6863
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-011-5649-7