Sandia fracture challenge 2: Sandia California's modeling approach

Karlson, Kyle N.; Brown, Arthur A.; Veilleux, Michael G.

doi:10.1007/s10704-016-0090-1

Title: Sandia fracture challenge 2: Sandia California's modeling approach

Journal Article · Wed Mar 09 00:00:00 EST 2016 · International Journal of Fracture

DOI:https://doi.org/10.1007/s10704-016-0090-1· OSTI ID:1251631

Karlson, Kyle N. ^[1]; Brown, Arthur A. ^[1]; Veilleux, Michael G. ^[1]

Sandia National Lab. (SNL-CA), Livermore, CA (United States)

The second Sandia Fracture Challenge illustrates that predicting the ductile fracture of Ti-6Al-4V subjected to moderate and elevated rates of loading requires thermomechanical coupling, elasto-thermo-poro-viscoplastic constitutive models with the physics of anisotropy and regularized numerical methods for crack initiation and propagation. We detail our initial approach with an emphasis on iterative calibration and systematically increasing complexity to accommodate anisotropy in the context of an isotropic material model. Blind predictions illustrate strengths and weaknesses of our initial approach. We then revisit our findings to illustrate the importance of including anisotropy in the failure process. Furthermore, mesh-independent solutions of continuum damage models having both isotropic and anisotropic yields surfaces are obtained through nonlocality and localization elements.

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Research Organization:: Sandia National Lab. (SNL-CA), Livermore, CA (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC04-94AL85000

OSTI ID:: 1251631

Report Number(s):: SAND-2015-8788J; 614705

Journal Information:: International Journal of Fracture, Vol. 198, Issue 1-2; ISSN 0376-9429

Publisher:: SpringerCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 9 works

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Cited By (2)

Sandia Fracture Challenge 3: detailing the Sandia Team Q failure prediction strategy Karlson, Kyle N.; Alleman, Coleman; Foulk III, James W. International Journal of Fracture, Vol. 218, Issue 1-2 https://doi.org/10.1007/s10704-019-00365-x	journal	July 2019
Predicting the reliability of an additively-manufactured metal part for the third Sandia fracture challenge by accounting for random material defects Johnson, Kyle L.; Emery, John M.; Hammetter, Chris I. International Journal of Fracture https://doi.org/10.1007/s10704-019-00368-8	journal	July 2019

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36 MATERIALS SCIENCE
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Title: Sandia fracture challenge 2: Sandia California's modeling approach

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