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Publisher DOI: 10.3390/molecules24142543
Title: Modelling of mechanical behavior of biopolymer alginate aerogels using the bonded-particle model
Language: English
Authors: Dosta, Maksym 
Jarolin, Kolja  
Gurikov, Pavel 
Keywords: mechanical behavior;plastic deformation;aerogels;discrete element method;bonded-particle model
Issue Date: 12-Jul-2019
Publisher: Multidisciplinary Digital Publishing Institute
Source: Molecules 24 (14): 2543 (2019)
Journal or Series Name: Molecules 
Abstract (english): A novel mesoscale modelling approach for the investigation of mechanical properties of alginate aerogels is proposed. This method is based on the discrete element method and bonded-particle model. The nanostructure of aerogel is not directly considered, instead the highly porous structure of aerogels is represented on the mesoscale as a set of solid particles connected by solid bonds. To describe the rheological material behavior, a new elastic-plastic functional model for the solids bonds has been developed. This model has been derived based on the self-similarity principle for the material behavior on the macro and mesoscales. To analyze the effectiveness of the proposed method, the behavior of alginate aerogels with different crosslinking degrees (calcium content) was analyzed. The comparison between experimental and numerical results has shown that the proposed approach can be effectively used to predict the mechanical behavior of aerogels on the macroscale.
DOI: 10.15480/882.2364
ISSN: 1420-3049
Other Identifiers: doi: 10.3390/molecules24142543
Institute: Feststoffverfahrenstechnik und Partikeltechnologie V-3 
Thermische Verfahrenstechnik V-8 
Mehrskalensimulation von Feststoffsystemen V-EXK1 
Entwicklung und Modellierung neuartiger nanoporöser Materialien V-EXK2 
Type: (wissenschaftlicher) Artikel
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