Deformability of expanded polystyrene under short-term compression |
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Authors: | I J Gnip S I Vaitkus V I Kersulis S A Veyelis |
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Institution: | (1) “Thermoinsulation” Institute, Gediminas Vilnius Technical University, Vilnius, Lithuania |
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Abstract: | The results obtained in an experimental investigation of deformability of expanded polystyrene (EPS) under short-term compression
are presented. The density of EPS varied from 13 to 28 kg/m3. The method of design of experiments was used to determine the elastic modulus and the ultimate strain (corresponding to
the end of quasi-linear deformability) under compression stresses operating perpendicularly and parallel to the faces of EPS
products. A graphical interpretation of the models is also presented. Based on the experimental data obtained, it was concluded
that the expanded polystyrene was homogeneous in mutually perpendicular planes with respect to its deformability in compression.
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Translated from Mekhanika Kompozitnykh Materialov, Vol. 43, No. 5, pp. 639–656, September–October, 2007. |
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Keywords: | expanded polystyrene (EPS) compression design of experiments elastic modulus elastic deformation optimal height of specimens |
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