Rigidity percolation control of the brittle-ductile transition in disordered networks

  title={Rigidity percolation control of the brittle-ductile transition in disordered networks},
  author={Estelle Berthier and Jonathan E. Kollmer and Silke Henkes and Kuang Liu and J. M. Schwarz and Karen E. Daniels},
  journal={Physical Review Materials},
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 $\langle z \rangle$ of the underlying network provides a similar control. Our experiments show that tuning the connectivity of the network provides access to a range of… Expand

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