Study of intrinsic and extrinsic size effects on shear bands in metallic glasses
Research output: Contributions to collected editions/works › Published abstract in conference proceedings › Research › peer-review
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.
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 language | English |
|---|---|
| Title of host publication | Contributions 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 |
| Editors | J. M. Floryan |
| Number of pages | 2 |
| Volume | 3 |
| Publisher | International Union for Theoretical and Applied Mechanics |
| Publication date | 2016 |
| Pages | 2524-2525 |
| ISBN (print) | 978-0-660-05459-9 |
| ISBN (electronic) | 978-0-660-05459-9 |
| Publication status | Published - 2016 |
| Event | International Congress of Theoretical and Applied Mechanics - XXIV ICTAM 2016 - Montreal, Canada Duration: 21.08.2016 → 26.08.2016 Conference number: 24 |
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