Taylor Anvil Impact Scenario (TAIS) Data Set

TAIS was generated using Sierra/SolidMechanics [1] (a Lagrangian, three-dimensional code for problems with large deformations and nonlinear material behaviors) in combination with ParaView/Catalyst [2]. The images were generated in situ (at the same time as the physics simulation) using Catalyst. The simulation is of an Oxygen Free High Conductivity (OFHC) copper cylinder, 2.54 cm long with a diameter of .762 cm and an initial velocity of 190 m/sec, impacting a rigid wall. The ensemble is a sensitivity study that evaluates the effects of changing four parameters of the Johnson-Cook inelastic constitutive law: ajo, bjo, njo, and beta. The height and radius of the cylinder after the impact are compared to experimental photographic results. Two output metrics are calculated for each run, ndrf_last and ndhf_last. These variables are the normalized differences between the radius/height of the final cylinder state from the last timestep of the simulation and the final radius/height of the cylinder in the experiment, respectively. Since the differences would decrease in those cases where the simulation more closely matched the experimental results, the optimal case would be a simulation where the values of these two metrics were zero (i.e. there is no difference between the simulation and the experiment).

Footnotes

[1]

Sierra Solid Mechanics Team. Sierra/SolidMechanics 4.22 User’s Guide. Technical Report SAND2011-7597, Sandia National Laboratories (2011).

[2]

Ayachit, U., Bauer, A., Geveci, B., O’Leary, P., Moreland, K., Fabian, N., and Mauldin, J., ParaView Catalyst: Enabling In Situ Data Analysis and Visualization, Proceedings of the First Workshop on In Situ Infrastructures for Enabling Extreme-Scale Analysis and Visualization (ISAV2015), pp. 25-29, ACM, New York, NY (2015).