Teilprojekt P7 - Collective Phenomena in Failure at Complex Interfaces

Third Party Funds Group - Sub project

Overall project details

Overall project: Fracture across Scales: Integrating Mechanics, Materials Science, Mathematics, Chemistry, and Physics (FRASCAL)

Overall project speaker:
Prof. Dr.-Ing. Paul Steinmann (Lehrstuhl für Technische Mechanik)

Project Details

Project leader:
Dr. Paolo Moretti
Prof. Dr. Bernd Meyer

Contributing FAU Organisations:
Lehrstuhl für Werkstoffsimulation
Professur für Computational Chemistry
Zentralinstitut für Scientific Computing (ZISC)

Funding source: DFG / Graduiertenkolleg (GRK)
Acronym: GRK2423 - P7
Start date: 02/01/2019
End date: 30/06/2023

Abstract (technical / expert 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.

Last updated on 2018-16-08 at 14:20