Epoxy and polyurethane foams with different content of voids were tested under compression.
Thereby, the epoxy foam showed a simple correlation between the fraction of the foaming agent and the density and void fraction. In contrast to this foam, the density and void fraction of the polyurethane system is additionally dependent on the position in the body of the foam.
The empirical classic correlation and the mechanical modified Gent-Thomas model as models for the calculation of the compression properties of foams showed good agreement between the measured and the calculated values. The empirical model with its materials parameters showed a bigger flexibility.
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