135 citations · 814 across the 38 of their papers we have counts for
7 papers · 1 filter
On the competition between dislocation transmission and crack nucleation at phase boundaries
F. Bormann, R. H. J. Peerlings, M. G. D. Geers
The interaction of dislocations with phase boundaries is a complex phenomenon, that is far from being fully understood. A 2D Peierls-Nabarro finite element (PN-FE) model for studyi…
The Peierls--Nabarro FE model in two-phase microstructures -- a comparison with atomistics
F. Bormann, K. Mikeš, O. Rokoš +1
This paper evaluates qualitatively as well as quantitatively the accuracy of a recently proposed Peierls--Nabarro Finite Element (PN-FE) model for dislocations by a direct comparis…
Application and adaptation of the truncated Newton method for non-convex plasticity problems
F. Bormann, R. H. J. Peerlings, M. G. D. Geers
Small-scale plasticity problems are often characterised by different patterning behaviours ranging from macroscopic down to the atomistic scale. In successful models of such comple…
A computational approach towards modelling dislocation transmission across phase boundary
F. Bormann, R. H. J. Peerlings, M. G. D. Geers +1
To study the nanoscopic interaction between edge dislocations and a phase boundary within a two-phase microstructure the effect of the phase contrast on the internal stress field d…
Micromorphic Computational Homogenization for Mechanical Metamaterials with Patterning Fluctuation Fields
O. Rokoš, M. M. Ameen, R. H. J. Peerlings +1
This paper presents a homogenization framework for elastomeric metamaterials exhibiting long-range correlated fluctuation fields. Based on full-scale numerical simulations on a cla…
On Micromechanical Parameter Identification With Integrated DIC and the Role of Accuracy in Kinematic Boundary Conditions
O. Rokoš, J. P. M. Hoefnagels, R. H. J. Peerlings +1
Integrated Digital Image Correlation (IDIC) is nowadays a well established full-field experimental procedure for reliable and accurate identification of material parameters. It is…