Fracture across Scales

Welcome to the Website of the Research Training Group GRK 2423 FRASCAL!

Fracture across Scales

Integrating Mechanics, Materials Science, Mathematics, Chemistry, and Physics

The present RTG (Research Training Group) aims to improve understanding of fracture behaviour in brittle heterogeneous materials by developing simulation methods that are able to capture the multiscale nature of failure. With (i) its rooting in different scientific disciplines, (ii) its focus on the influence of heterogeneity on fracture behaviour at different length and time scales as well as (iii) its integration of highly specialised approaches into a “holistic” concept, the RTG addresses a truly challenging interdisciplinary topic in mechanics of materials.

Although various simulation approaches describing fracture behaviour exist for particular types of materials and specific time and length scales, an integrated and all-encompassing approach that is able to capture fracture processes in different – and in particular heterogeneous – materials at various length and time resolutions is still lacking. Thus, the objective of this interdisciplinary RTG consisting of experts from mechanics, materials science, mathematics, chemistry, and physics is to develop the necessary methodology to investigate the mechanisms underlying brittle fracture and how they are influenced by heterogeneity in various materials.

The insights obtained together with the methodological framework will allow tailoring and optimising materials with regard to fracture behaviour. The RTG covers a representative spectrum of brittle materials and their composites, together with granular and porous materials. We study these at length and time scales relevant to science and engineering, ranging from sub-atomic via atomic and molecular over mesoscale to macroscopic dimensions. Our modelling approaches and simulation tools are based on concepts from quantum mechanics, molecular mechanics, mesoscopic approaches, and continuum mechanics. These are integrated into an overall framework, which represents an important step towards a virtual laboratory eventually complementing and minimising extensive and expensive experimental testing of materials and components.

Within the RTG, young researchers under the supervision of experienced PAs perform cutting-edge research on challenging scientific aspects of fracture. The RTG fosters synergies in research and advanced education and is intended to become a key element in FAU‘s interdisciplinary research areas “New Materials and Processes” and “Modelling–Simulation–Optimisation”

Within the framework of this symposium, the principal advisors of the GRK 2423 FRASCAL projects will contribute their own insights into the fracture problem from a higher-level perspective in six presentations and provide a basis for stimulating discussions and interaction with colleagues from around the world.

Call for new doctoral positions for the 2nd cohort of GRK 2423 FRASCAL! Starting January 2022; Application deadline 31.08.2021; Join a team of 11 doctoral researchers + 1 postdoctoral researcher working in highly cross-linked projects supervised by experienced principal advisors!

On June 14, 2021, GRK 2423 FRASCAL, in collaboration with IGK 2495, screened the documentary film "PICTURE A SCIENTIST" followed by a (digital) panel discussion. The film tells of the spirit of optimism among women researchers who are writing a new chapter for women scientists. A biologist, a chemist, and a geologist take the audience on a journey through the experiences of their academic careers - as women in science.

The 1st FRASCAL Virtual Colloquium aims to provide a platform to discuss recent advances in computational modeling of fracture at various length and time scales. The event will take place from April 22 to July 22, 2021, and will comprise a series of weekly invited talks by international experts

The past second year of FRASCAL, i.e. 2020, stood out, however, due to the restrictions imposed by the Corona pandemic. Our 2nd Visitors Workshop in the middle of March 2020 was the absolute last activity in attendance just a few days before the first lockdown. In summer 2020, the situation ...