Cargando…

Energy Absorption and Mechanical Performance of Functionally Graded Soft–Hard Lattice Structures

Today, the rational combination of materials and design has enabled the development of bio-inspired lattice structures with unprecedented properties to mimic biological features. The present study aims to investigate the mechanical performance and energy absorption capacity of such sophisticated hyb...

Descripción completa

Detalles Bibliográficos
Autores principales: Rahman, Hafizur, Yarali, Ebrahim, Zolfagharian, Ali, Serjouei, Ahmad, Bodaghi, Mahdi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8000776/
https://www.ncbi.nlm.nih.gov/pubmed/33799821
http://dx.doi.org/10.3390/ma14061366
_version_ 1783671075324821504
author Rahman, Hafizur
Yarali, Ebrahim
Zolfagharian, Ali
Serjouei, Ahmad
Bodaghi, Mahdi
author_facet Rahman, Hafizur
Yarali, Ebrahim
Zolfagharian, Ali
Serjouei, Ahmad
Bodaghi, Mahdi
author_sort Rahman, Hafizur
collection PubMed
description Today, the rational combination of materials and design has enabled the development of bio-inspired lattice structures with unprecedented properties to mimic biological features. The present study aims to investigate the mechanical performance and energy absorption capacity of such sophisticated hybrid soft–hard structures with gradient lattices. The structures are designed based on the diversity of materials and graded size of the unit cells. By changing the unit cell size and arrangement, five different graded lattice structures with various relative densities made of soft and hard materials are numerically investigated. The simulations are implemented using ANSYS finite element modeling (FEM) (2020 R1, 2020, ANSYS Inc., Canonsburg, PA, USA) considering elastic-plastic and the hardening behavior of the materials and geometrical non-linearity. The numerical results are validated against experimental data on three-dimensional (3D)-printed lattices revealing the high accuracy of the FEM. Then, by combination of the dissimilar soft and hard polymeric materials in a homogenous hexagonal lattice structure, two dual-material mechanical lattice statures are designed, and their mechanical performance and energy absorption are studied. The results reveal that not only gradual changes in the unit cell size provide more energy absorption and improve mechanical performance, but also the rational combination of soft and hard materials make the lattice structure with the maximum energy absorption and stiffness, in comparison to those structures with a single material, interesting for multi-functional applications.
format Online
Article
Text
id pubmed-8000776
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-80007762021-03-28 Energy Absorption and Mechanical Performance of Functionally Graded Soft–Hard Lattice Structures Rahman, Hafizur Yarali, Ebrahim Zolfagharian, Ali Serjouei, Ahmad Bodaghi, Mahdi Materials (Basel) Article Today, the rational combination of materials and design has enabled the development of bio-inspired lattice structures with unprecedented properties to mimic biological features. The present study aims to investigate the mechanical performance and energy absorption capacity of such sophisticated hybrid soft–hard structures with gradient lattices. The structures are designed based on the diversity of materials and graded size of the unit cells. By changing the unit cell size and arrangement, five different graded lattice structures with various relative densities made of soft and hard materials are numerically investigated. The simulations are implemented using ANSYS finite element modeling (FEM) (2020 R1, 2020, ANSYS Inc., Canonsburg, PA, USA) considering elastic-plastic and the hardening behavior of the materials and geometrical non-linearity. The numerical results are validated against experimental data on three-dimensional (3D)-printed lattices revealing the high accuracy of the FEM. Then, by combination of the dissimilar soft and hard polymeric materials in a homogenous hexagonal lattice structure, two dual-material mechanical lattice statures are designed, and their mechanical performance and energy absorption are studied. The results reveal that not only gradual changes in the unit cell size provide more energy absorption and improve mechanical performance, but also the rational combination of soft and hard materials make the lattice structure with the maximum energy absorption and stiffness, in comparison to those structures with a single material, interesting for multi-functional applications. MDPI 2021-03-11 /pmc/articles/PMC8000776/ /pubmed/33799821 http://dx.doi.org/10.3390/ma14061366 Text en © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Rahman, Hafizur
Yarali, Ebrahim
Zolfagharian, Ali
Serjouei, Ahmad
Bodaghi, Mahdi
Energy Absorption and Mechanical Performance of Functionally Graded Soft–Hard Lattice Structures
title Energy Absorption and Mechanical Performance of Functionally Graded Soft–Hard Lattice Structures
title_full Energy Absorption and Mechanical Performance of Functionally Graded Soft–Hard Lattice Structures
title_fullStr Energy Absorption and Mechanical Performance of Functionally Graded Soft–Hard Lattice Structures
title_full_unstemmed Energy Absorption and Mechanical Performance of Functionally Graded Soft–Hard Lattice Structures
title_short Energy Absorption and Mechanical Performance of Functionally Graded Soft–Hard Lattice Structures
title_sort energy absorption and mechanical performance of functionally graded soft–hard lattice structures
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8000776/
https://www.ncbi.nlm.nih.gov/pubmed/33799821
http://dx.doi.org/10.3390/ma14061366
work_keys_str_mv AT rahmanhafizur energyabsorptionandmechanicalperformanceoffunctionallygradedsofthardlatticestructures
AT yaraliebrahim energyabsorptionandmechanicalperformanceoffunctionallygradedsofthardlatticestructures
AT zolfagharianali energyabsorptionandmechanicalperformanceoffunctionallygradedsofthardlatticestructures
AT serjoueiahmad energyabsorptionandmechanicalperformanceoffunctionallygradedsofthardlatticestructures
AT bodaghimahdi energyabsorptionandmechanicalperformanceoffunctionallygradedsofthardlatticestructures