Abstract
In the finishing phase of the conventional manufacturing process of foams, the outer skin of the foam is usually removed. In the present investigation, the effect of outer skin is considered to understand its effect on the impact-resistance and energy absorption behavior of the foam. An assessment of the impact-resistance of various foams is carried out using numerically simulated drop-weight impact hammer test. Here, six different types of foam materials are considered for investigation of their energy absorption characteristics, assessed for understanding the behavior of the foams with-skin and without-skin. The effect of density and variation in drop-weight height is also investigated. The criteria chosen for the evaluation of the comparative study include reaction force-time history, displacement-time history, the variation in the reaction force with displacement, and specific energy absorption (SEA). Additionally, to compare the different foam materials, the obtained peak responses of the above-considered criteria are normalized based on the respective specific mass of the foam. Based on this study, it is concluded that the presence of skin significantly improved the impact-resistance for most of the foams considered herein. Further, an effective way to choose a foam material for the target application is also discussed. Moreover, polymeric syntactic foam, with a density of 220 kg/m3, showed relatively superior behavior than other foams considered in the present investigation.
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CHORDIYA, Y.M., GOEL, M.D. & MATSAGAR, V.A. Assessment of energy absorption for different foams subjected to low-velocity impact. Sādhanā 48, 157 (2023). https://doi.org/10.1007/s12046-023-02222-z
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DOI: https://doi.org/10.1007/s12046-023-02222-z