The Electromagnetic Cylindrical Compression: A Tool to Test Behavior Modeling under Large Strain at High Strain Rate

摘要

The material behavior at high strain rate (> 10 s-1) and large strain (> 50 %) is unattainable with usual tests. So it is deduced extrapolating results from tensile, compression, torsion, plate impact or pressure shear experiments, Exploitation of an electromagnetic cylindrical compression test allows to validate this extrapolation. It allows to analyze the coupling of the effects of plastic strain, plastic strain rate and temperature or also, for example, (lie effect of a viscous drag dislocation term. The principle and the limits of this exploitation by experimentation-ID calculation comparisons are illustrated with the first tests obtained on copper tubes.