Expanded polystyrene (EPS) is commonly used in protective systems due to its high capability to absorb energy. Thus, understanding the dynamic properties is essential to predict performance of such materials. This paper presents dynamic compressive experiments conducted on EPS at various densities. The influence of the temperature, the impact velocity and the density on the material’s behavior are presented. In addition, various stress-strain curve parameters are extracted and analyzed. The results show that EPS behavior mainly depends on its density and the impact velocity. However, it is independent of the temperature on the studied range. Based on the experimental data, mathematical models are developed that can be used to predict the material’s behavior in different configurations or to incorporate EPS properties into numerical simulations. All proposed models align with values coming from previous studies.
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