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Modeling the microstructure of biopolymer aerogels using Voronoi tessellation method

Chandrasekaran, Rajesh and Hillgärtner, Markus and Rege, Ameya Govind and Milow, Barbara and Itskov, Mikhail (2021) Modeling the microstructure of biopolymer aerogels using Voronoi tessellation method. Proceedings in Applied Mathematics and Mechanics, 20 (1), e202000102. Wiley. doi: 10.1002/pamm.202000102. ISSN 1617-7061.

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Official URL: https://onlinelibrary.wiley.com/doi/10.1002/pamm.202000102


The bulk properties of biopolymer aerogels depend on their microstructure, which can be tailored by different synthesis and drying methods. Biopolymer aerogels are characterized by a fibrillar morphology having a cellular-like network. The recently proposed constitutive modeling approach by Rege et al. [1] has shown good predictive capabilities in describing the mechanical behavior of such aerogels. Although the model describes the cellular nature and adheres to the cell‐size distributions of aerogels, it is based on the assumption that the network is made up of idealized square-shaped cells. In this contribution, the diversified cellular morphology of aerogels is described computationally using a Laguerre-Voronoi tessellation based approach [2]. The pore-size distribution (PSD) data obtained from experiments accounts for the random cell sizes within the network. Accordingly, Voronoi tessellations are generated to create periodic representative volume elements (RVEs) resembling the microstructural properties of the cellular network. This work is an extension of our previous Voronoi tessellation-based 2-d description of biopolymer aerogels [3].

Item URL in elib:https://elib.dlr.de/140638/
Document Type:Article
Title:Modeling the microstructure of biopolymer aerogels using Voronoi tessellation method
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Chandrasekaran, RajeshRWTH Aachen UniversityUNSPECIFIED
Hillgärtner, MarkusRWTH Aachen UniversityUNSPECIFIED
Rege, Ameya GovindAmeya.Rege (at) dlr.dehttps://orcid.org/0000-0001-9564-5482
Milow, BarbaraBarbara.Milow (at) dlr.dehttps://orcid.org/0000-0002-6350-7728
Itskov, MikhailRWTH Aachen UniversityUNSPECIFIED
Journal or Publication Title:Proceedings in Applied Mathematics and Mechanics
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
DOI :10.1002/pamm.202000102
Page Range:e202000102
Keywords:biopolymer aerogel, Voronoi, 3-d, pore-size distribution
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:03 Feb 2021 08:07
Last Modified:03 Feb 2021 08:07

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