Characterisation and Modelling of a Melt-Extruded LDPE Closed Cell Foam
| Periodical | Applied Mechanics and Materials (Volume 70) |
|---|---|
| Main Theme | Advances in Experimental Mechanics VIII |
| Edited by | R. L. Burguete, M. Lucas, E. A. Patterson, S. Quinn |
| Pages | 105-110 |
| DOI | 10.4028/www.scientific.net/AMM.70.105 |
| Citation | Qusai Hatem Jebur et al., 2011, Applied Mechanics and Materials, 70, 105 |
| Online since | August, 2011 |
| Authors | Qusai Hatem Jebur, Philip Harrrison, Zao Yang Guo, Gerlind Schubert, Vincent Navez |
| Keywords | Closed-Cell Compressible Foam, Poisson’s Ratio, Transverse Isotropy, Uniaxial Compression |
| Price | US$ 28,- |
This paper describes uniaxial compression tests on a melt-extruded closed-cell Low-Density Polyethylene (LDPE) foam. The stress-strain response shows the mechanical behaviour of the foam is predominantly transversely isotropic viscoelastic and compressible. Images analysis is used to estimate the Poisson’s ratio under large strains. When the deformation is less than 5 percent, the kinematics and mechanical response of the polymer foam can be well-described by a linear compressible transversely isotropic elastic model. For large strain, a method of manipulating experimental data obtained from testing in the principal and transverse directions (stress vs strain and Poisson’s ratio) in order to estimate the uniaxial compression response of the foam at any arbitrary orientation is proposed. An isotropic compressible hyperfoam model is then used to implement this behaviour in a finite element code.
