Micromechanical Origin of Plasticity and Hysteresis in Nestlike Packings

Yashraj Bhosale, Nicholas Weiner, Alex Butler, Seung Hyun Kim, Mattia Gazzola, Hunter King

Research output: Contribution to journalArticlepeer-review


Disordered packings of unbonded, semiflexible fibers represent a class of materials spanning contexts and scales. From twig-based bird nests to unwoven textiles, bulk mechanics of disparate systems emerge from the bending of constituent slender elements about impermanent contacts. In experimental and computational packings of wooden sticks, we identify prominent features of their response to cyclic oedometric compression: nonlinear stiffness, transient plasticity, and eventually repeatable velocity-independent hysteresis. We trace these features to their micromechanic origins, identified in characteristic appearance, disappearance, and displacement of internal contacts.

Original languageEnglish (US)
Article number198003
JournalPhysical review letters
Issue number19
StatePublished - May 13 2022

ASJC Scopus subject areas

  • General Physics and Astronomy


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