Teilprojekt P7 - Collective Phenomena in Failure at Complex Interfaces (GRK2423 - P7)

Third Party Funds Group - Sub project


Acronym: GRK2423 - P7

Start date : 02.01.2019

End date : 30.06.2023

Extension date: 31.12.2027

Website: https://www.frascal.research.fau.eu/home/research/p-7-collective-phenomena-in-failure-at-complex-interfaces/


Overall project details

Overall project

Fracture across Scales: Integrating Mechanics, Materials Science, Mathematics, Chemistry, and Physics (FRASCAL) (GRK 2423 FRASCAL) Jan. 1, 2019 - Dec. 31, 2027

Overall project speaker:

Project details

Short description

Interface failure in both tension and shear is characterized by a dynamic interplay of local processes (breaking of bonds, interface contacts or – in case of frictional interfaces – asperities) and long-range elastic load re-distribution which may occur either quasi-statically or in a dynamic manner associated with wave propagation phenomena and can be mapped onto a network of partly break-able load transferring elements. This interplay may give rise to complex dynamics which are strongly influenced by contact geometry and also the chemical properties of the interface. A particularly simple case is the transition from static to sliding friction between continuous bodies where such dynamic collective phenomena are being discussed under the label of ‘detachment waves’.

The goal of P7 is to generalize this concept of ‘detachment waves’ to general problems of failure of frictional or adhesive joints, and to interfaces and bodies which possess a complex multi-scale chemical or geometrical structure, including hierarchical geometrical structures as encountered in biosystems.

Scientific Abstract

Interface failure in both tension and shear is characterized by a dynamic interplay of local processes (breaking of bonds, interface contacts or – in case of frictional interfaces – asperities) and long-range elastic load re-distribution which may occur either quasi-statically or in a dynamic manner associated with wave propagation phenomena and can be mapped onto a network of partly break-able load transferring elements. This interplay may give rise to complex dynamics which are strongly influenced by contact geometry and also the chemical properties of the interface. A particularly simple case is the transition from static to sliding friction between continuous bodies where such dynamic collective phenomena are being discussed under the label of ‘detachment waves’.

The goal of P7 is to generalize this concept of ‘detachment waves’ to general problems of failure of frictional or adhesive joints, and to interfaces and bodies which possess a complex multi-scale chemical or geometrical structure, including hierarchical geometrical structures as encountered in biosystems.

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Funding Source