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Hossain, Shakhawath
Publications (6 of 6) Show all publications
Bergström, P., Hossain, S. & Uesaka, T. (2019). Scaling Behaviour of Strength of 3D-, Semi-flexible-, Cross-linked Fibre Network. International Journal of Solids and Structures, 166(July 2019), 68-74
Open this publication in new window or tab >>Scaling Behaviour of Strength of 3D-, Semi-flexible-, Cross-linked Fibre Network
2019 (English)In: International Journal of Solids and Structures, ISSN 0020-7683, E-ISSN 1879-2146, Vol. 166, no July 2019, p. 68-74Article in journal (Refereed) Published
Abstract [en]

Anisotropic, semi-flexible, cross-linked, random fibre networks are ubiquitous both in nature and in a wide variety of industrial materials. Modelling mechanical properties of such networks have been done extensively in terms of criticality, mechanical stability, and scaling of network stiffnesses with structural parameters, such as density. However, strength of the network has received much less attention. In this work we have constructed 3D-planar fibre networks where fibres are, more or less, oriented in the in-plane direction, and we have investigated the scaling of network strength with density. Instead of modelling fibres as 1D element (e.g., a beam element with stretching, bending and/or shear stiffnesses), we have treated fibres as a 3D-entity by considering the features like twisting stiffness, transverse stiffness, and finite cross-link (or bond) strength in different deformation modes. We have reconfirmed the previous results of elastic modulus in the literature that, with increasing density, the network modulus indeed undergoes a transition from bending-dominated deformation to stretching-dominated with continuously varying scaling exponent. Network strength, on the other hand, scales with density with a constant exponent, i.e., showing no obvious transition phenomena. Using material parameters for wood fibres, we have found that the predicted results for stiffness and strength agree very well with experimental data of fibre networks of varying densities reported in the literature.

Keywords
Cellulose, Discrete element method, Fibre network, Network strength, Polymer, Uniaxial tension
National Category
Chemical Engineering
Identifiers
urn:nbn:se:miun:diva-34637 (URN)10.1016/j.ijsolstr.2019.02.003 (DOI)000465508700006 ()2-s2.0-85061710592 (Scopus ID)
Available from: 2018-10-05 Created: 2018-10-05 Last updated: 2019-11-13Bibliographically approved
Hossain, S., Bergström, P. & Uesaka, T. (2019). Uniaxial Compression of Three-Dimensional Entangled Fibre Networks: Impacts of Contact Interactions. Modelling and Simulation in Materials Science and Engineering, 27(1), Article ID 015006.
Open this publication in new window or tab >>Uniaxial Compression of Three-Dimensional Entangled Fibre Networks: Impacts of Contact Interactions
2019 (English)In: Modelling and Simulation in Materials Science and Engineering, ISSN 0965-0393, E-ISSN 1361-651X, Vol. 27, no 1, article id 015006Article in journal (Other academic) Published
Abstract [en]

This paper concerns uniaxial compression of anisotropic fibre network, as typically seen in the end use of nonwoven and textile fibre assemblies. The constitutive relationship and deformation mechanism have been investigated by using a bead-model to represent the complex structures of the constituent fibres and the fibre networks. The compression stress shows a power-law dependency on the density with a threshold density for both experimental and numerical fibre networks. Unlike the widely studied tri-axial compression of the initially isotropic network, it was found that the contact interaction between the fibres, especially the fibre-fibre contact stiffness (or the transverse compression properties of fibres), has a large impact on all the constitutive parameters. In particular, the exponent values computed based on the softer contact stiffnesses agreed very well with the experimental values reported in the literature. The internal deformation mechanism was similar to the earlier studies that at low compression, the deformation is dominated by the low-energy-mode deformations (i.e. bending and shear), whereas at higher compression, the difference appears: the compression of fibre-fibre contacts, instead of the deformation in the fibre axial direction, takes over.

Keywords
uniaxial compression, deformation mechanics, fibre network, cellulose, polymer, DEM model of fibre network
National Category
Chemical Engineering
Identifiers
urn:nbn:se:miun:diva-34638 (URN)10.1088/1361-651X/aaf1ed (DOI)000453313600001 ()2-s2.0-85064092365 (Scopus ID)
Available from: 2018-10-05 Created: 2018-10-05 Last updated: 2019-05-24Bibliographically approved
Hossain, S., Bergström, P., Sarangi, S. & Uesaka, T. (2017). Computational Design of Fibre Network by Discrete Element Method. In: Advancedin Pulp and Paper Research, Proceedings of the 16th Fundamental Research Symposium (Peer-reviewed), Oxford, UK, September 3rd-8th,2017: . Paper presented at The 16th Pulp and Paper Fundamental Research Symposium, Oxford, UK, 3-8 September 2017.
Open this publication in new window or tab >>Computational Design of Fibre Network by Discrete Element Method
2017 (English)In: Advancedin Pulp and Paper Research, Proceedings of the 16th Fundamental Research Symposium (Peer-reviewed), Oxford, UK, September 3rd-8th,2017, 2017Conference paper, Published paper (Refereed)
National Category
Chemical Engineering
Identifiers
urn:nbn:se:miun:diva-33316 (URN)
Conference
The 16th Pulp and Paper Fundamental Research Symposium, Oxford, UK, 3-8 September 2017
Available from: 2018-03-20 Created: 2018-03-20 Last updated: 2018-12-11Bibliographically approved
Hossain, S., Bergström, P. & Uesaka, T. (2017). Non-Affine Deformation Of Soft Fibre Network. In: : . Paper presented at Svenska Mekanikdagar, Uppsala, Sweden, 12-13 juni 2017 (pp. 46).
Open this publication in new window or tab >>Non-Affine Deformation Of Soft Fibre Network
2017 (English)Conference paper, Oral presentation with published abstract (Refereed)
National Category
Chemical Engineering
Identifiers
urn:nbn:se:miun:diva-33315 (URN)
Conference
Svenska Mekanikdagar, Uppsala, Sweden, 12-13 juni 2017
Available from: 2018-03-20 Created: 2018-03-20 Last updated: 2019-01-18Bibliographically approved
Hossain, S., Bergström, P. & Uesaka, T. (2017). Nonlinear Compression of Soft Fibre Network. In: Book Of Abstracts Deformation And Damage Mechanisms Of Woodfibre Network- Materials And Structures: . Paper presented at EUROMECH Colloquium 592, KTH Royal Institute of Technology, Stockholm, Sweden, 7 June – 9 June 2017.
Open this publication in new window or tab >>Nonlinear Compression of Soft Fibre Network
2017 (English)In: Book Of Abstracts Deformation And Damage Mechanisms Of Woodfibre Network- Materials And Structures, 2017Conference paper, Oral presentation with published abstract (Refereed)
National Category
Chemical Engineering
Identifiers
urn:nbn:se:miun:diva-33314 (URN)
Conference
EUROMECH Colloquium 592, KTH Royal Institute of Technology, Stockholm, Sweden, 7 June – 9 June 2017
Available from: 2018-03-20 Created: 2018-03-20 Last updated: 2019-01-18Bibliographically approved
Hossain, S., Bergström, P. & Uesaka, T. (2016). A Particle-based Model to Investigate the Mechanics of Soft Fibre Network. In: : . Paper presented at World Congress of Computational Mechanics and ECCOMAS 2016, Crete, Greece.
Open this publication in new window or tab >>A Particle-based Model to Investigate the Mechanics of Soft Fibre Network
2016 (English)Conference paper, Oral presentation with published abstract (Refereed)
National Category
Chemical Engineering
Identifiers
urn:nbn:se:miun:diva-33312 (URN)
Conference
World Congress of Computational Mechanics and ECCOMAS 2016, Crete, Greece
Available from: 2018-03-20 Created: 2018-03-20 Last updated: 2019-01-18Bibliographically approved
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