Mesoscale polycrystal calculations of damage in spallation in metals
- Los Alamos National Laboratory
The goal of this project is to produce a damage model for spallation in metals informed by the polycrystalline grain structure at the mesoscale. Earlier damage models addressed the continuwn macroscale in which these effects were averaged out. In this work we focus on cross sections from recovered samples examined with EBSD (electron backscattered diffraction), which reveal crystal grain orientations and voids. We seek to understand the loading histories of specific sample regions by meshing up the crystal grain structure of these regions and simulating the stress, strain, and damage histories in our hydro code, FLAG. The stresses and strain histories are the fundamental drivers of damage and must be calculated. The calculated final damage structures are compared with those from the recovered samples to validate the simulations.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC52-06NA25396
- OSTI ID:
- 1025544
- Report Number(s):
- LA-UR-10-05106; LA-UR-10-5106; TRN: US201120%%593
- Resource Relation:
- Journal Volume: 10; Conference: New Models and Hydrocodes 2010 ; May 23, 2010 ; Paris, France
- Country of Publication:
- United States
- Language:
- English
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