Crack phantoms: localized damage correlations and failure in network models of disordered materials

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autor(en): Zaiser M, Lennartz-Sassinek S, Moretti P
Zeitschrift: Journal of Statistical Mechanics-Theory and Experiment
Verlag: Institute of Physics: Hybrid Open Access
Jahr der Veröffentlichung: 2015
ISSN: 1742-5468
Sprache: Englisch


Abstract


We study the initiation of failure in network models of disordered materials such as random fuse and spring models, which serve as idealized representations of fracture processes in quasi-two-dimensional, disordered material systems. We consider two different geometries, namely rupture of thin sheets and delamination of thin films, and demonstrate that irrespective of geometry and implementation of the disorder (random failure thresholds versus dilution disorder) failure initiation is associated with the emergence of typical localized correlation structures in the damage patterns. These structures ('crack phantoms') exhibit well-defined characteristic lengths, which relate to the failure stress by scaling relations that are typical for critical crack nuclei in disorder-free materials. We discuss our findings in view of the fundamental nature of failure processes in materials with random microstructural heterogeneity.



FAU-Autoren / FAU-Herausgeber

Moretti, Paolo Dr.
Lehrstuhl für Werkstoffsimulation
Zaiser, Michael Prof. Dr.
Lehrstuhl für Werkstoffsimulation


Zitierweisen

APA:
Zaiser, M., Lennartz-Sassinek, S., & Moretti, P. (2015). Crack phantoms: localized damage correlations and failure in network models of disordered materials. Journal of Statistical Mechanics-Theory and Experiment. https://dx.doi.org/10.1088/1742-5468/2015/08/P08029

MLA:
Zaiser, Michael, Sabine Lennartz-Sassinek, and Paolo Moretti. "Crack phantoms: localized damage correlations and failure in network models of disordered materials." Journal of Statistical Mechanics-Theory and Experiment (2015).

BibTeX: 

Zuletzt aktualisiert 2018-10-08 um 06:55