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Mechanics of biopolymer aerogels based on microstructures generated from 2-d Voronoi tessellations

Rege, Ameya Govind and Hillgärtner, Markus and Itskov, Mikhail (2019) Mechanics of biopolymer aerogels based on microstructures generated from 2-d Voronoi tessellations. The Journal of Supercritical Fluids, 151, pp. 24-29. Elsevier. DOI: 10.1016/j.supflu.2019.04.018 ISSN 0896-8446

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Official URL: https://www.sciencedirect.com/science/article/pii/S0896844618308684

Abstract

In this paper, the heterogeneous morphology of biopolymer aerogels is described using a 2-d Voronoi tessellation, which accounts for the randomized cell shapes of aerogels and adheres to the pore-size distributions obtained from experimental data. Accordingly, a two-dimensional periodic representative volume element (RVE) has been generated and simulated under compression. In particular, the sensitivity of the varying microstructural parameters within the RVE is analyzed. It is realized that the fiber diameter, the pore-size distribution, and the density of the cells within the aerogel network show a significant influence on their mechanical response. The trends of the model predictions are qualitatively in good agreement with the macroscopic experimental data of biopolymer aerogels.

Item URL in elib:https://elib.dlr.de/127467/
Document Type:Article
Title:Mechanics of biopolymer aerogels based on microstructures generated from 2-d Voronoi tessellations
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Rege, Ameya GovindAmeya.Rege (at) dlr.dehttps://orcid.org/0000-0001-9564-5482
Hillgärtner, MarkusRWTH AachenUNSPECIFIED
Itskov, MikhailRWTH AachenUNSPECIFIED
Date:7 May 2019
Journal or Publication Title:The Journal of Supercritical Fluids
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:151
DOI :10.1016/j.supflu.2019.04.018
Page Range:pp. 24-29
Publisher:Elsevier
ISSN:0896-8446
Status:Published
Keywords:Voronoi tessellation, Aerogel, Pore-size, Representative volume element, Periodic boundary condition
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Road Transport
DLR - Research area:Transport
DLR - Program:V ST Straßenverkehr
DLR - Research theme (Project):V - NGC Fahrzeugstruktur II
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Aerogels and Aerogel Composites
Deposited By: Rege, Dr. Ameya Govind
Deposited On:06 Nov 2019 15:43
Last Modified:06 Nov 2019 15:43

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