Abstract
A split Hopkinson pressure bar (SHPB) experiment was done to examine the feasibility and explosion resistance of high‐damping rubber materials developed for use in the area of antiexplosion applications. Through the experiment, the dynamic mechanical properties of the high‐damping rubber were determined. The existence of dynamic compressive stress‐strain curves at various strain rates of the high‐damping rubber have been confirmed from the SHPB experiment. The variation law of the dynamic compression performance with the strain rate is studied, and the energy absorption characteristics of high‐damping rubber materials are analyzed. To study the microstructural changes of the high‐damping rubber before and after impact, a scanning electron microscopy (SEM) test was done. The results indicated that the stress‐strain curve and dynamic modulus of high‐damping rubber has an obvious strain rate effect, and the strength and energy absorption ability of high‐damping rubber material increases with an increase in the strain rate; the ideal energy absorption efficiency of high‐damping rubber can reach 0.8 at a high strain rate and the ideal energy absorption efficiency is more than 0.5 in a wide deformation range; when compared with aluminum foam, the energy absorption effect for high‐damping rubber is more apparent. In the event of a compressed deformation or the creation of holes, there may be a change in the main internal mechanism of the high buffering and energy absorption capacity of the high‐damping rubber.
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