COMPFRAC · Challenges in computational fracture mechanics: crack branching and fragmentation, and fracture in active materials
6РП — Действия „Мария Кюри“
- Период
- 2006-09-01 → 2008-08-31
- Финансиране от ЕС
- 80 000 €
- Участници
- 1
- Схема
- IRG
Линиите свързват координатора с партньорите.
Накратко на български
Компютърни симулации анализират как се разпадат материалите при удар или как се деформират въглеродните нанотръби. Това помага да се предвиди поведението на материалите в ситуации, в които реалните експерименти са трудни или невъзможни.
Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.
Резултати накратко
Final Activity Report Summary - COMPFRAC (Challenges in computational fracture mechanics: crack branching and fragmentation, and fracture in active materials)
Computer simulation of material behaviour allows us to confront theories with experiments, as well as predict the material behaviour in situations where experiments are difficult or just impossible. This includes how materials break into pieces under high-speed impact, how nano-structures sustain loads and develop intricate deformation patterns, or how the reliability of smart active materials is hindered by complex microstructure formation in the vicinity of cracks. The work performed in this International Reintegration Grant addresses each of these issues. We have carefully examined the predictive ability of models and algorithms to simulate dynamic fracture phenomena by tightly comparing ad hoc experiments with the simulations. We have unveiled through simulation the complex buckling patterns that multi-walled carbon nanotubes develop when deformed. These patterns had only partially been observed experimentally, but the mechanical consequences (a softening of their response) predicted by our theory are consistent with previous observations. We have simulated for the first time the full complexity of the microstructure formation as a crack propagates through a ferroelectric ceramic. These research lines have resulted in high-impact publications and have successfully attracted funding at national and European level. Furthermore, one of the key objectives of the IRG scheme has been accomplished as the researcher has successfully integrated in the local academic and research system.
Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз
Цел на проекта
Despite fracture in solids is a ubiquitous phenomenon with tremendous implications in the reliability and safety of mechanical systems, as well as technological and natural processes, its predictive modelling and simulation in complex situations is far from being accomplished. Fracture mechanics is a mature discipline, which nevertheless fails to address in a quantitative manner important phenomena. Amongst these, dynamic fracture, branching and fragmentation in brittle solids (governing the dynamics of structures subject to impact and explosions), and the fracture and fatigue processes in smart materials (hindering the performance of ferroelectrics in devices) stand out.The present project will address the modelling and numerical simulation of these two complex phenomena. The expected contributions will be methodological, developing new effective algorithms, scientific, since the simulations will shed light on the poorly understood physics, and technological, providing validated predictive tools for engineering analysis and design. The project requires a multidisciplinary effort in the fields of mechanics and engineering, materials science, scientific computing (in particular parallel computing), applied mathematics and applied physics.The researcher's five- year experience as a doctoral student at Northwestern University and as a post-doctoral scholar at the California Institute of Technology (Caltech) suits the objectives of the project. Her participation in large multidisciplinary initiatives at Caltech dealing with the proposed topics and the scientific collaborations initiated will be instrumental for the success of the project. She intends to accept an offer for a tenure-track assistant professorship at the Polytechnic University of Catalunya. I f the project is funded, it will contribute to the researcher being able to capitalize in Europe on her experience, and further develop the scientific collaborations with the US.
Оригинален текст от CORDIS (на английски).
Участници
- UNIVERSITAT POLITECNICA DE CATALUNYA · BARCELONAКоординаторИспания
Връзки
Данни: CORDIS, © Европейски съюз