Stelios Kyriakides, Research
Abstract
The initial yielding of some low carbon steels exhibits a material instability known as Lüders banding. This is a dislocation driven phenomenon that macroscopically manifests as inhomogeneous deformation. For example, in a displacement controlled uniaxial test Lüders banding leads to coexistence of two deformation regimes while the stress remains relatively unchanged. Such localizations have undesirable consequences in structural applications such as stretch marks and structural instabilities.
Experiment
Simulation
