@article{ref1,
title="Multi-morphology lattices lead to improved plastic energy absorption",
journal="Materials and design",
year="2020",
author="Alberdi, Ryan and Dingreville, Rémi and Robbins, Joshua and Walsh, Timothy and White, Benjamin C. and Jared, Bradley and Boyce, Brad L.",
volume="194",
number="",
pages="108883-108883",
abstract="While lattice metamaterials can achieve exceptional energy absorption by tailoring periodically distributed heterogeneous unit cells, relatively little focus has been placed on engineering heterogeneity above the unit-cell level. In this work, the energy-absorption performance of lattice metamaterials with a heterogeneous spatial layout of different unit cell architectures was studied. Such multi-morphology lattices can harness the distinct mechanical properties of different unit cells while being composed out of a single base material. A rational design approach was developed to explore the design space of these lattices, inspiring a non-intuitive design which was evaluated alongside designs based on mixture rules. Fabrication was carried out using two different base materials: 316L stainless steel and Vero White photopolymer. <br><br>RESULTS show that multi-morphology lattices can be used to achieve higher specific energy absorption than homogeneous lattice metamaterials. Additionally, it is shown that a rational design approach can inspire multi-morphology lattices which exceed rule-of-mixtures expectations.<p /> <p>Language: en</p>",
language="en",
issn="0261-3069",
doi="10.1016/j.matdes.2020.108883",
url="http://dx.doi.org/10.1016/j.matdes.2020.108883"
}