Micromechanical modeling of damage in polycrystals by means of extended crystal plasticity theory (Project C04)

• Subject Area: Mechanics
• Term: since 2025
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 278868966

The formability of polycrystals is defined by deformation and damage mechanisms at the microscale. To describe them, a crystal plasticity theory has been coupled with interface models for capturing grain boundary decohesion and micro-cracks in the quasi-brittle martensite phase. This framework is to be extended for temperature- and pressure-induced healing. Furthermore, fatigue indicators will be embedded into the model. Since the numerical complexity of the model is very high, effective, macroscopic forming-induced damage tensors are to be derived. Finally, the transfer of the final framework to aluminum alloys will be demonstrated.

• DFG Programme: CRC/Transregios
• Subproject of: TRR 188: Damage Controlled Forming Processes
• Applicant Institution: Technische Universität Dortmund, since 1/2025
• Project Head: Professor Dr.-Ing. Jörn Mosler, since 1/2025