Peculiarities of High-Rate Deformation of Copper Upon Convergence of Cylindrical Channels by Action of Shock Waves

Glazkov, V. S.; Ignatova, O. N.; Malyshev, A. N.; Nadezhin, S. S.; Podurets, A. M.; Raevsky, V. A.; Tyupanova, O. A.; Elert, Mark; Furnish, Michael D.; Anderson, William W.; Proud, W. G.; Butler, William T.

doi:10.1063/1.3295245

Cited by 5 publications

(1 citation statement)

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“…4 New types of experiments are being deployed as are new approaches to the analysis of experiments. [5][6][7][8][9][10] References here are provided as examples and are not meant to be exhaustive or even fully representative of the breadth of work being performed. Against this backdrop, we propose a new macroscale flow strength model, based both on multiscale computational observations and on experimental observations, that is able to predict experimental results across a wide range of conditions.…”

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A multiscale strength model for tantalum over an extended range of strain rates

Barton

Rhee

2013

Journal of Applied Physics

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mentioning

confidence: 99%

A multiscale strength model for tantalum over an extended range of strain rates

Barton

Rhee

2013

Journal of Applied Physics

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Physical Regime Sensitivity

Prime

Merson

Chen

2023

J. dynamic behavior mater.

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This work presents a novel sensitivity approach that quantifies sensitivity to regimes of a model’s state variables rather than constitutive model parameters. This Physical Regime Sensitivity (PRS) determines which regimes of a model’s independent variables have the biggest influence on an experiment or application. PRS analysis is demonstrated on a strength model used in the simulation of a copper Taylor cylinder. In a series of simulations, the strength model was perturbed sequentially in local regimes of plastic strain, plastic strain rate, temperature and pressure, and then the prediction of cylinder shape was compared to unperturbed calculations. Results show, for example, that the deformed length of the cylinder was most sensitive to strength at a strain rate of 1.0 × 104/sec., but the deformed footprint radius was most sensitive to strength at a strain rate of about 4.0 × 104/sec. Compared to current histogram approaches, PRS can be used to design or interpret integrated experiments by identifying not just which regimes are accessed somewhere in the experiment but the causality question of which regimes actually affect the measured data. PRS should allow one to focus experimental and modeling efforts where they are most needed and to better interpret experiments.

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