Uncovering the Chemo-Mechanics of Fracture via Quantum Mechanics Based Concurrent Multiscale Modelling
Event details
| Date | 23.09.2013 |
| Hour | 13:15 |
| Speaker |
Derek H. Warner, Cornell University Bio: Derek Warner is currently a Visiting Professor in the Computational Solid Mechanics Laboratory at EPFL. He is on sabbatical leave from his Associate Professor appointment in the School of Civil and Environmental Engineering at Cornell University. Prior to this he was a Postdoctoral Research Associate in the Division of Engineering at Brown University, where he worked in the Mechanics of Solids Group. He completed his Ph.D. in Mechanical Engineering at Johns Hopkins University in 2006. Derek’s overall research effort is aimed at understanding the connection between microscopic physical phenomena and the macroscopic deformation and failure of engineering materials by coupling cutting-edge computing technologies with state-of-the-art simulation techniques. |
| Location | |
| Category | Conferences - Seminars |
The prediction of crack growth is one of the most technologically important and scientifically intriguing problems in mechanics of materials. Yet, despite decades of research, a comprehensive understanding of the process has remained elusive. As a quintessential multiscale phenomenon, crack growth is both a chemical and mechanical process, involving interatomic bond breakage driven by long range mechanical stress fields. Thanks to growing supercomputing resources and novel concurrent multiscale modeling techniques that can accurately couple quantum and continuum mechanics modeling domains, crack tip processes in real environments are just now becoming accessible to powerful quantum chemistry approaches such as Kohn Sham Density Functional Theory. The majority of our work in this area has been focused on understanding how surface impurity elements influence the behavior of cracks in aluminum, a material that serves as the base of many technologically important alloys whose fracture response is known to be affected by chemical environment. In this talk, I will review our work on this topic and use it to frame our ongoing work.
Links
Practical information
- General public
- Free
Organizer
- Fontcuberta i Morral Anna <[email protected]>
Contact
- Fontcuberta i Morral Anna <[email protected]>