2019/09/30 by Daniel Hexner, Nidhi Pashine, Andrea J. Liu +1 · 33 citations
Materials Science · Physics and Astronomy · #Composite material #Elasticity (physics) #Material Dynamics and Properties #Materials science #Nonlinear elasticity #Nonlinear system #Physics #Polymer composites and self-healing #Shape Memory Alloy Transformations #Shape-memory alloy #cond-mat.soft
paper · pdf · doi:10.1103/physrevresearch.2.043231
published in Physical Review Research 2(4) (American Physical Society)
openalex created_date 2019/09/12 · arxiv created 2020/08/16 · openalex publication_date 2020/11/13 · arxiv updated 2020/11/18 · openalex updated_date 2026/08/06
Disordered solids often change their elastic response as they slowly age. Using experiments and simulations, we study how aging disordered planar networks under an applied stress affects their nonlinear elastic response. We are able to modify dramatically the elastic properties of our systems in the nonlinear regime. Using simulations, we study two models for the microscopic evolution of properties of such a material; the first considers changes in the material strength, while the second considers distortions in the microscopic geometry. Both models capture different aspects of the experiments including the encoding of memories of the aging history of the system and the dramatic effects on the material's nonlinear elastic properties. Our results demonstrate how aging can be used to create complex elastic behavior in the nonlinear regime.