Data from: Rigidity percolation control of the brittle-ductile transition in disordered networks
Kollmer, Jonathan E.
Henkes, Silke E.
Schwarz, J. M.
Daniels, Karen E.
Published Jul 17, 2019 on Dryad.
Cite this dataset
Berthier, Estelle et al. (2019). Data from: Rigidity percolation control of the brittle-ductile transition in disordered networks [Dataset]. Dryad. https://doi.org/10.5061/dryad.q1g5279
In ordinary solids, material disorder is known to increase the size of the process zone in which stress concentrates at the crack tip, causing a transition from localized to diffuse failure. Here, we report experiments on disordered 2D lattices, derived from frictional particle packings, in which the mean coordination number $\Z$ of the underlying network provides a similar control. Our experiments show that tuning the connectivity of the network provides access to a range of behaviors from brittle to ductile failure. We elucidate the cooperative origins of this transition using a frictional pebble game algorithm on the original, intact lattices. We find that the transition corresponds to the isostatic value $\Z = 3$ in the large-friction limit, with brittle failure occurring for structures vertically spanned by a rigid cluster, and ductile failure for floppy networks containing non-spanning rigid clusters. Furthermore, we find that individual failure events typically occur within the floppy regions separated by the rigid clusters.
Data from: Rigidity percolation control of the brittle-ductile transition in disordered networksataDryad
For each network tested in the study we provide the adjacency and particle information used to generate the lattice, the measured macroscopic response, the identified failure locations and the displacement at which they take place.
National Science Foundation, Award: DMR-1206808 and No. DMR-1507938.