We demonstrate a dislocation density-based crystal plasticity (CP) model approach for simulating mesoscale deformation and damage. The existing CP framework is extended to be compatible with the oxygen-free phosphorous copper microstructure that is the focus of this study. The key aim is to introduce relevant plastic deformation mechanisms and to develop a failure model capable of depicting creep damage in the material. The effect of local variations in material is evaluated, and the model response is compared with experiments and characterisation. The basis of this work is CP material modelling, including grain orientation and size, obtained using electron backscatter diffraction and experimental test data of real relaxation test specimens. This will yield a realistic description of texture and grain shape and, ultimately, accurate stress–strain response at the microstructural level for further evaluation of performance with respect to material creep(−fatigue) damage.
SormenjälkiSukella tutkimusaiheisiin 'Crystal plasticity model for creep and relaxation deformation of OFP copper'. Ne muodostavat yhdessä ainutlaatuisen sormenjäljen.
- 1 Päättynyt
EARLY/Vilaca: New high-resolution non-destructive methods for assessment of early damage in advanced welded steels for high-temperature applications with extended life
01/01/2020 → 31/12/2023
Projekti: Academy of Finland: Other research funding