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Title: Multi-morphology lattices lead to improved plastic energy absorption

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. 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.

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1634146
Alternate Identifier(s):
OSTI ID: 1634810; OSTI ID: 1670179
Report Number(s):
SAND2020-5856J; SAND-2020-5346J
Journal ID: ISSN 0264-1275; S0264127520304172; 108883; PII: S0264127520304172
Grant/Contract Number:  
AC04-94AL85000; NA0003525
Resource Type:
Published Article
Journal Name:
Materials & Design
Additional Journal Information:
Journal Name: Materials & Design Journal Volume: 194 Journal Issue: C; Journal ID: ISSN 0264-1275
Publisher:
Elsevier
Country of Publication:
United Kingdom
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Alberdi, Ryan, Dingreville, Rémi, Robbins, Joshua, Walsh, Timothy, White, Benjamin C., Jared, Bradley, and Boyce, Brad L. Multi-morphology lattices lead to improved plastic energy absorption. United Kingdom: N. p., 2020. Web. https://doi.org/10.1016/j.matdes.2020.108883.
Alberdi, Ryan, Dingreville, Rémi, Robbins, Joshua, Walsh, Timothy, White, Benjamin C., Jared, Bradley, & Boyce, Brad L. Multi-morphology lattices lead to improved plastic energy absorption. United Kingdom. https://doi.org/10.1016/j.matdes.2020.108883
Alberdi, Ryan, Dingreville, Rémi, Robbins, Joshua, Walsh, Timothy, White, Benjamin C., Jared, Bradley, and Boyce, Brad L. Tue . "Multi-morphology lattices lead to improved plastic energy absorption". United Kingdom. https://doi.org/10.1016/j.matdes.2020.108883.
@article{osti_1634146,
title = {Multi-morphology lattices lead to improved plastic energy absorption},
author = {Alberdi, Ryan and Dingreville, Rémi and Robbins, Joshua and Walsh, Timothy and White, Benjamin C. and Jared, Bradley and Boyce, Brad L.},
abstractNote = {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. 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.},
doi = {10.1016/j.matdes.2020.108883},
journal = {Materials & Design},
number = C,
volume = 194,
place = {United Kingdom},
year = {2020},
month = {9}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1016/j.matdes.2020.108883

Figures / Tables:

Figure 1 Figure 1: Unit cell architectures used as constituents of of multi-morphology lattices: (a) Stretch-dominated FCC, and (b) bending-dominated BCC.

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