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Microstructure-informed modelling of open-porous materials

Rege, Ameya (2023) Microstructure-informed modelling of open-porous materials. International Conference on Advanced Computational Engineering and Experimenting, 2023-07-03 - 2023-07-07, Kreta, Griechenland.

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Official URL: https://ironix-conferences.com/acex-2023/ss6.html


The properties of open-porous cellular materials are guided by the spatial arrangement of their skeletal framework or network and their cell-wall morphologies. In this contribution, both these aspects will be discussed. First, the effect of the pore-network connectivity will be addressed. Here, the scaling exponent as observed in the power scaling relations between e.g., Young’s modulus or the thermal conductivity vs. the relative density will be explored. While the open-cell foam model calculates the exponent to be 2 [1] for their Young’s modulus, many porous materials demonstrate an exponent between 3 and 4 [2]. The morphological implications towards this observation will be illustrated through computational modeling and finite element calculations. Moreover, many open-porous materials show a pearl-necklace-like cell-wall morphology [3]. There, the inter-particle necks play a significant role in determining the mechanical features of such materials, particularly their mode of deformation and failure [4]. This aspect will also be explored in detail. References [1] L.J. Gibson, M.F. Ashby, The mechanics of three-dimensional cellular materials, Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences, 382 (1997) 43-59. [2] J. Groß, J. Fricke, Scaling of elastic properties in highly porous nanostructured aerogels, NanoStructured Materials, 6 (1995) 905-908. [3] A. Rege, S. Aney, L. Ratke, Impact of pearl-necklace-like skeleton on pore sizes and mechanical properties of porous materials: A theoretical view, AIP Advances, 12 (2022) 105108. [4] L. Ratke, A. Rege, S. Aney, The Effect of Particle Necks on the Mechanical Properties of Aerogels, Materials, 16 (2022).

Item URL in elib:https://elib.dlr.de/197861/
Document Type:Conference or Workshop Item (Speech)
Title:Microstructure-informed modelling of open-porous materials
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Rege, AmeyaUNSPECIFIEDhttps://orcid.org/0000-0001-9564-5482UNSPECIFIED
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:open-porous, cellular, materials, modelling, aerogel
Event Title:International Conference on Advanced Computational Engineering and Experimenting
Event Location:Kreta, Griechenland
Event Type:international Conference
Event Start Date:3 July 2023
Event End Date:7 July 2023
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 - FFAE - Fahrzeugkonzepte, Fahrzeugstruktur, Antriebsstrang und Energiemanagement
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Aerogels and Aerogel Composites
Deposited By: Rege, Dr. Ameya Govind
Deposited On:19 Oct 2023 10:21
Last Modified:24 Apr 2024 20:58

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