Modeling and simulation of size effects in metallic glasses with non-local continuum mechanics theory
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In: Journal of the Mechanical Behavior of Materials, Vol. 22, No. 1-2, 01.06.2013, p. 51-66.
Research output: Journal contributions › Journal articles › Research › peer-review
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TY - JOUR
T1 - Modeling and simulation of size effects in metallic glasses with non-local continuum mechanics theory
AU - Klusemann, Benjamin
AU - Bargmann, Swantje
PY - 2013/6/1
Y1 - 2013/6/1
N2 - The present contribution is concerned with the modeling and computation of size effects in metallic glasses. For the underlying model description, we resort to a thermodynamically consistent, gradient-extended continuum mechanics approach. The numerical implementation is carried out with the help of the finite element method. Numerical examples are presented and compared with existing experimental findings to illustrate the performance of the constitutive model. In this regard, the influence of the material length scale is investigated. It is shown that with decreasing sample size or decreasing material length scale, a delay of the shear localization is obtained. In addition, the tension-compression asymmetry observed in experiments is captured by the proposed model. Further, the rate-dependent behavior as well as the influence of the results to initial local defects are investigated.
AB - The present contribution is concerned with the modeling and computation of size effects in metallic glasses. For the underlying model description, we resort to a thermodynamically consistent, gradient-extended continuum mechanics approach. The numerical implementation is carried out with the help of the finite element method. Numerical examples are presented and compared with existing experimental findings to illustrate the performance of the constitutive model. In this regard, the influence of the material length scale is investigated. It is shown that with decreasing sample size or decreasing material length scale, a delay of the shear localization is obtained. In addition, the tension-compression asymmetry observed in experiments is captured by the proposed model. Further, the rate-dependent behavior as well as the influence of the results to initial local defects are investigated.
KW - Engineering
UR - https://www.mendeley.com/catalogue/8bc2f751-1fc1-3a2f-93a8-d25200e35700/
U2 - 10.1515/jmbm-2013-0009
DO - 10.1515/jmbm-2013-0009
M3 - Journal articles
VL - 22
SP - 51
EP - 66
JO - Journal of the Mechanical Behavior of Materials
JF - Journal of the Mechanical Behavior of Materials
SN - 2191-0243
IS - 1-2
ER -