Just another WordPress site - Ruhr-Universität Bochum
The Bauschinger effect in polycrystalline metals: A single crystal plasticity approach with local and non-local kinematic hardening
- Date: 15.01.2026
- Time: 12:00
- Place: RUB, ZGH seminar room 03-121
Abstract
The mechanical response of polycrystalline metals under cyclic plastic deformation is crucial for the relia-ble design of structural components and forming processes. A key phenomenon in this context is the Bauschinger effect (BE), characterized by the early onset of reversed plasticity after load reversal. While several explanatory models exist, they often remain limited to qualitative interpretations of experimental observations. This presentation introduces a single-crystal plasticity framework that enables a systematic assessment of the quantitative contributions of different mechanisms proposed to explain the BE. Both local and non-local kinematic hardening models are formulated, implemented and evaluated against ex-perimental data for single crystals as well as polycrystalline aggregates. This approach provides deeper insights into the microstructural origins of the BE and the relative importance of the underlying mecha-nisms.