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Application of Voronoi tessellations to model cellular aerogels

Chandrasekaran, Rajesh and Hillgärtner, Markus and Milow, Barbara and Rege, Ameya Govind and Itskov, Mikhail (2019) Application of Voronoi tessellations to model cellular aerogels. Kassel University Press. 8th GACM Colloquium on Computational Mechanics, 28.-30. Aug. 2019, Kassel, Deutschland. DOI: 10.19211/KUP9783737650939 ISBN 978-3-86219-5093-9

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Abstract

Many aerogels are characterized by a fibrillar morphology. Recently proposed constitutive models have shown good predictive capabilities in describing the mechanical behavior of such aerogels. On the one hand, these models account for the cellular nature and adhere to the cell-size distributions, while on the other hand they are based on the assumption of the network made up of idealized square-shaped cells. The heterogeneous cellular morphology of aerogels can computationally be described by a Voronoi tessellation based approach. Accordingly, the random cell shapes within the network are accounted for by means of the pore-size distribution data obtained from experiments. To this end, 2-d and 3-d periodic representative volume elements (RVEs) are generated from the cellular structure obtained using Voronoi tessellations and simulated under compression using finite element analysis.

Item URL in elib:https://elib.dlr.de/128948/
Document Type:Conference or Workshop Item (Speech)
Title:Application of Voronoi tessellations to model cellular aerogels
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Chandrasekaran, RajeshRWTH Aachen UniversityUNSPECIFIED
Hillgärtner, MarkusRWTH Aachen UniversityUNSPECIFIED
Milow, BarbaraBarbara.Milow (at) dlr.dehttps://orcid.org/0000-0002-6350-7728
Rege, Ameya GovindAmeya.Rege (at) dlr.deUNSPECIFIED
Itskov, MikhailRWTH Aachen UniversityUNSPECIFIED
Date:August 2019
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI :10.19211/KUP9783737650939
Page Range:pp. 409-412
Editors:
EditorsEmail
Gleim, TobiasUNSPECIFIED
Lange, StephanUNSPECIFIED
Publisher:Kassel University Press
ISBN:978-3-86219-5093-9
Status:Published
Keywords:aerogel, voronoi, model
Event Title:8th GACM Colloquium on Computational Mechanics
Event Location:Kassel, Deutschland
Event Type:international Conference
Event Dates:28.-30. Aug. 2019
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 15:55
Last Modified:06 Nov 2019 15:55

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