2D finite element analysis of thermally bonded nonwoven materials:continuous and discontinuous models

Hou, Xiaonan and Acar, Memis and Silberschmidt, Vadim (2009) 2D finite element analysis of thermally bonded nonwoven materials:continuous and discontinuous models. Computational Materials Science, 46 (3). 700–707. ISSN 0927-0256

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Abstract

Due to a random structure of nonwoven materials, their non-uniform local material properties and nonlinear properties of single fibres, it is difficult to develop a numerical model that adequately accounts for these features and properly describes their performance. Two different finite element (FE) models – continuous and discontinuous – are developed here to describe the tensile behaviour of nonwoven materials. A macro-level continuum finite element model is developed based on the classic composite theory by treating the fibrous network as orthotropic material. This model is used to analyse the effect of thermally bonding points on the deformational behaviour and deformation mechanisms of thermally bonded nonwoven materials at macro-scale. To describe the effects of discontinuous microstructure of the fabric and implement the properties of polypropylene fibres, a micro-level discontinuous finite element model is developed. Applicability of both models to describe various deformational features observed in experiments with a real thermally bonded nonwoven is discussed.

Item Type: Journal Article
Journal or Publication Title: Computational Materials Science
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/1700
Subjects:
Departments: Faculty of Science and Technology > Engineering
ID Code: 82070
Deposited By: ep_importer_pure
Deposited On: 07 Oct 2016 14:00
Refereed?: Yes
Published?: Published
Last Modified: 17 Feb 2020 03:15
URI: https://eprints.lancs.ac.uk/id/eprint/82070

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