Extreme Tension Wave Profile in Al6061*

An understanding of the extreme tension wave is necessary to study various applications including fragmentation, crack formation, etc. This information is also useful to see the whole spectrum of extreme materials behavior ranging from the compression to tension. Historically this analysis has depended on the series of empirical tests with multi-dimensional (or finite sized) configurations preventing the proper analysis of the fundamental of the extreme tension wave propagation. This is mainly due to the propagation of necking or edge release wave into the local area of interest.
In this study, 1D configuration Al6061 sample is assumed to be pulled in the speed ranging 0.5~1.5km/s, and the sample behavior is studied by the conservation equations based analytical approach and a series MD (molecular dynamic) code simulation to reveal the nature of the extreme tension wave. It was identified that the extreme tension wave shows a typical ramp wave nature, and the slope of ramp wave front gets lower as it propagates delivering the potential application to the study of quasi-isentrope in tension.