Extreme resilience and dissipation in heterogeneous disordered materials

Abstract

Long range order and symmetry in heterogeneous materials architected on crystal lattices lead to elastic and inelastic anisotropies and thus limit mechanical functionalities in particular crystallographic directions. Here, we present a facile approach for designing heterogeneous disordered materials that exhibit nearly isotropic mechanical resilience and energy dissipation capabilities. We demonstrate, through experiments and numerical simulations on 3D-printed prototypes, that near-complete isotropy can be attained in the proposed heterogeneous materials with a small, finite number of random spatial points. We also show that adding connectivity between random subdomains leads to much enhanced elastic stiffness, plastic strength, energy dissipation, shape recovery, structural stability and reusability in our new heterogeneous materials. Overall, our study opens avenues for the rational design of a new class of heterogeneous materials with isotropic mechanical functionalities for which the engineered disorder throughout the subdomains plays a crucial role.

References in corpus (16)

• Is Random Close Packing of Spheres Well Defined?
• Jammed Hard-Particle Packings: From Kepler to Bernal and Beyond
• Designer disordered materials with large complete photonic band gaps
• The Geometrical Structure of Disordered Sphere Packings
• Roles of icosahedral and crystal-like order in hard spheres glass transition
• Isotropic Band Gaps and Freeform Waveguides Observed in Hyperuniform Disordered Photonic Solids
• Finite-Size Scaling at the Jamming Transition
• Data-driven topology optimization of spinodoid metamaterials with seamlessly tunable anisotropy
• The mechanical response of cellular materials with spinodal topologies
• Mechanical Performance of 3D Printed Interpenetrating Phase Composites with Spinodal Topologies
• Progressive damage and rupture in polymers
• Jamming in finite systems: stability, anisotropy, fluctuations and scaling
• Transport, Geometrical and Topological Properties of Stealthy Disordered Hyperuniform Two-Phase Systems
• Experiment-informed finite-strain inverse design of spinodal metamaterials
• A polyurethane-urea elastomer at low to extreme strain rates
• Large strain micromechanics of thermoplastic elastomers with random microstructures