Material Behavior in Wires of 1100 Aluminum Subjected to Transverse Impact

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Abstract
Material behavior in wires of 1100 aluminum subject to tensile impact loading is examined. Room temperature behavior is observed over the entire range of the stress-strain relation by observation of strain and deformation angle behind the transverse wave front created by a constant-velocity, transverse impact on a wire. A rate-independent analysis of plastic-wave propagation is used in conjunction with experimental data to derive the dynamic stress-strain relation, which is found to depart significantly from the quasi-static relation. The stress required to produce a given strain is raised by impact loading, and the critical impact velocity is higher than that predicted from the quasi-static relation. The uniform elongation at failure does not appear to be affected. Results are reasonably consistent with the data reported from several other types of high loading rate experiments.

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