Study of intrinsic and extrinsic size effects on shear bands in metallic glasses

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Authors

In the present contribution intrinsic and extrinsic size effects on the shear band propagation behavior in metallic glasses are
studied. To this end, a thermodynamically consistent finite strain viscoplasticity model is formulated. The strongly coupled and highly nonlinear
system of field equations consisting of deformation, free volume and plastic strain field, is implemented into the finite element method,
resulting in a non-local model formulation. The results show that the proposed continuum plasticity model is well suited to predict stable or
delayed shear localization process with decreasing sample size. With an underlying microstructure, the material behavior in metallic glasses
can be significantly influenced, as demonstrated numerically in this contribution on the basis of porous structures.
Original languageEnglish
Title of host publicationContributions to the Foundations of Multidisciplinary Research in Mechanics : Papers presented during the 24th International Congress of Theoretical and Applied Mechanics ICTAM2016, Montreal, 22-26, 2016
EditorsJ. M. Floryan
Number of pages2
Volume3
PublisherInternational Union for Theoretical and Applied Mechanics
Publication date2016
Pages2524-2525
ISBN (print)978-0-660-05459-9
ISBN (electronic)978-0-660-05459-9
Publication statusPublished - 2016
EventInternational Congress of Theoretical and Applied Mechanics - XXIV ICTAM 2016 - Montreal, Canada
Duration: 21.08.201626.08.2016
Conference number: 24