About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Dynamic Behavior of Materials IX
|
Presentation Title |
Spall of Tin and Its Sensitivity to Microscale Behaviors – A Computational Study |
Author(s) |
Kazem Alidoost, Nathan R Barton, Garry R Maskaly, Fady Najjar |
On-Site Speaker (Planned) |
Kazem Alidoost |
Abstract Scope |
A robust porosity-mechanics-based constitutive model, suited to large-deformation three-dimensional simulations, has been previously developed [http://dx.doi.org/10.1063/1.4971654]. Simulations of plate impact experiments are performed, with a multilayer flyer configuration that produces two shocks. Experimentally observable results such as the temperature and velocity histories are compared to those obtained by G. Maskaly and coworkers and presented at TMS2020 [LA-UR-20-21774]. The dependence of the simulated results on the microstructural modelling is studied. Simulations are performed for two distinct families of pores, those that are filled with material assumed to lack strength (bubbles) and those that are empty (voids). The mechanisms for porosity nucleation are studied, with particular emphasis on the distribution of nucleation sites. Demonstration three-dimensional large-deformation computations are presented, using this constitutive model in an arbitrary Lagrangian-Eulerian (ALE) simulation framework. This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344 (LLNL-ABS-823940). |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Computational Materials Science & Engineering, Modeling and Simulation |