Abstract
In this article, we present a study of the parameters which affect energy absorption in composite structures under dynamic loading conditions and a description of an experimental direct-impact device for the study of such structures. To reduce the field of our investigations, we have limited ourselves to the study of cylindrical tubular structures. The different results show a variation of the specific energy of the composite tubes according to the nature of the fibres, the matrix, the stacking sequence and the loading speed. The strain rate, ge, is a parameter on which various studies have been published and for which conclusions are sometimes still opposed. To satisfy mechanical strengthening and weight problems, multimaterial metal-composite structures have been developed. The results obtained show that, during dynamic tests, some structures exhibit crushing processes leading to significant increases in the specific energies.
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