Current automotive research and development efforts are aimed at understanding new and advanced high strength materials for use in structural components. By using higher strength materials, automakers can manufacture these structural components from thinner gauge materials to achieve weight reduction objectives while satisfying safety requirements and saving cost. However, the feasibility of these new materials is often limited by their formability during the manufacturing process. Compounded by their complex microstructure composition along with advanced deformation mechanisms, these new and advanced materials require rigorous experimental qualification before implementing them into a production environment.
CMRG develops novel simulation tools for predicting the formability of a material based on the material’s microstructure. Through the use of advanced phenomenological and crystal plasticity theory, we can simulate forming process at room/elevated temperatures to determine the limit strains and final thickness of a material. By understanding and tailoring the microstructure, we can pin-point processing strategies that can enhance the formability of a material to a point where the material can be feasible in a commercial or industrial application for the first time. This computational approach saves precious time and resources in the development process.
Our research areas in formability
- Simulation of forming processes
- Marciniak-Kuczynski (MK) analysis
- Formability at elevated temperature
- Mechanism-based enhancement of formability
Select publications
- Cyr, E., Mohammadi, M., Brahme, A., Mishra, R.K. and Inal, K., 2017. Modeling the Formability of Aluminum Alloys at Elevated Temperatures Using a New Thermo-Elasto-Viscoplastic Crystal Plasticity Framework. International Journal of Mechanical Sciences.
- Lévesque, J., Mohammadi, M., Mishra, R.K. and Inal, K., 2016. An extended Taylor model to simulate localized deformation phenomena in magnesium alloys. International Journal of Plasticity, 78, pp.203-222.
- Mohammadi, M., Brahme, A.P., Mishra, R.K. and Inal, K., 2014. Effects of post-necking hardening behavior and equivalent stress–strain curves on the accuracy of M–K based forming limit diagrams. Computational Materials Science, 85, pp.316-323.
