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Dynamic response of thermally bonded bicomponent fibre nonwovens

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conference contribution
posted on 18.08.2011 by Emrah Demirci, Memis Acar, Behnam Pourdeyhimi, Vadim Silberschmidt
Having a unique microstructure, nonwoven fabrics possess distinct mechanical properties, dissimilar to those of woven fabrics and composites. This paper aims to introduce a methodology for simulating a dynamic response of core/sheath-type thermally bonded bicomponent fibre nonwovens. The simulated nonwoven fabric is treated as an assembly of two regions with distinct mechanical properties. One region - the fibre matrix – is composed of non-uniformly oriented core/sheath fibres acting as link between bond points. Non-uniform orientation of individual fibres is introduced into the model in terms of the orientation distribution function in order to calculate the structure’s anisotropy. Another region – bond points – is treated in simulations as a deformable bicomponent composite material, composed of the sheath material as its matrix and the core material as reinforcing fibres with random orientations. Time-dependent anisotropic mechanical properties of these regions are assessed based on fibre characteristics and manufacturing parameters such as the planar density, core/sheath ratio, fibre diameter etc. Having distinct anisotropic mechanical properties for two regions, dynamic response of the fabric is modelled in the finite element software with shell elements with thicknesses identical to those of the bond points and fibre matrix.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Citation

DEMIRCI, E. ... et al., 2011. Dynamic response of thermally bonded bicomponent fibre nonwovens. IN: Burguete, R. L. ... et al, (eds.). Advances in Experimental Mechanics VIII. Selected, peer reviewed papers from the 8th International Conference on Advances in Experimental Mechanics: Integrating Simulation and Experimentation for Validation, September 7-9, 2011, Edinburgh, Scotland, pp. 405-409

Publisher

© Trans Tech Publications Inc.

Version

AM (Accepted Manuscript)

Publication date

2011

Notes

This is a conference paper and the definitive version is available from http://www.scientific.net/AMM

ISBN

9783037852026

ISSN

1660-9336

Book series

Applied mechanics and materials;70

Language

en

Exports