Simulation of Non-Shock Loading of Tantalum
DOI:
https://doi.org/10.14738/aivp.103.12372Abstract
We discuss and perform hydrocode simulations of gradual dynamic loading of tantalum. We show that using the generally accepted approach to viscoplastic response, it’s not possible to reproduce some features of the test results. But when we use our overstress approach, we’re able to reproduce those features, including the initial spike of the elastic precursor wave.
References
J.R. Asay et al., Yield strength of tantalum for shockless compression to 18GPa, J. Appl. Phys. 106, 073515 (2009).
I.L. Brown et al., Flow strength of tantalum under ramp compression to 250GPa, J. Appl. Phys. 115, 043530 (2014).
D.J. Steinberg, Equation of state and strength properties of selected materials, UCRL-MA-106439 (1996).
Y. Partom, Change of shear modulus and yield stress with pressure and temperature, Shock compression of condensed matter proceedings (2015).
Y. Partom, Overstress and flowstress approach to dynamic viscoplasticity, EPJ web of references 94, 04003 (2015).
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Copyright (c) 2022 Yehuda Partom
This work is licensed under a Creative Commons Attribution 4.0 International License.
