Direct simulation for concentrated fibre suspensions in transient and steady state shear flows

Ausias, Gilles; Xie, Fan; Tanner, Roger I.

doi:10.1016/j.jnnfm.2005.12.009

Cited by 47 publications

(42 citation statements)

References 36 publications

(66 reference statements)

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“…However, it is not able to relate finely the BMC's rheology with their microstructures. Based on an experimental analysis of flow-induced microstructures, such a model could be in future replaced by more sophisticated rheological models dedicated to these types of fibre suspensions [4,24,32,33,38,51,52,56,58]. -This phenomenological model was implemented into a FE code dedicated to the compression of compounds [19].…”

Section: Resultsmentioning

confidence: 99%

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Towards the simulation of mould filling with polymer composites reinforced with mineral fillers and short fibres

et al. 2009

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Bulk Moulding Compounds (BMC's) are short fibre reinforced polymer composites that behave, during their forming, as concentrated fibre suspensions. Their suspending fluid is also a concentrated granular suspension made up of the polymer filled with mineral fillers. In this work, a method is proposed to model their flow. Firstly, the rheology of an industrial BMC was analysed by performing two types of mechanical tests, i.e. lubricated simple and plane strain compression experiments. Experimental results underline the roles of the current strain, the strain rate as well as the mechanical loading on the rheology of the BMC. Secondly, a 3D tensorial rheological model is proposed to reproduce the simple and plane strain compression experiments. Then this model is implemented into a Finite Element code dedicated to the simulation of The 'Pôle de Compétitivité Plastipolis' (Région Rhône-Alpes -France) supports this research. compression moulding. Simulation results are finally compared with experiments achieved with rather complex flow situations.

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Section: Resultsmentioning

confidence: 99%

“…These studies were the basis to establish or validate rheological models that can be used to simulate the forming processes of these composites (e.g. [4,16,32,33,37,49,52,56,58]). …”

Section: Introductionmentioning

confidence: 99%

Towards the simulation of mould filling with polymer composites reinforced with mineral fillers and short fibres

et al. 2009

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“…Consequently, the governing equations are described by the equation of continuity (7) and the equation of motion (8).…”

Section: Governing Equation For Flowsmentioning

confidence: 99%

“…For example, the flocculation occurs in the forming process of fiber-reinforced composites and in pulp suspension flows in the manufacturing process of paper. Floc is a relatively weak aggregation, and hence it is relatively easily broken up by flow [4][5][6][7][8][9][10][11][12][13]. Although this approach provides detailed information on the flow-induced structure of flocs, it requires much expensive computational costs.…”

Section: Introductionmentioning

confidence: 99%

Modeling of a Floc-Forming Fluid Using a Reversible Network Model

Yamamoto

2014

J. Text. Eng.

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A reversible network model was applied to a model for a floc-forming fluid such as a pulp suspension. The reversible network model approximately represents the evolution of polymer network structures using non-interacting elastic dumbbells that have two states, active and dangling. The former corresponds to a network segment whose both ends connect to the network, while the latter corresponds to a network segment that its one end dissociates from the network. The transition between the active and the dangling states is stochastically simulated according to probability functions. In the present study, the repetition of forming and breakup of flocs in a flow was modeled by the reversible network model, and the model was examined by evaluating rheology of the model fluid and by simulating its Poiseuille flow in a circular tube. The predictions confirmed that the present model was appropriate for a model of floc-forming fluids.

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“…It is important to note that even those parameters are found by a single-rod problem, they are still reasonable to be applied for N-fibre systems since we assume that the fibres are always surrounded by the fluid (diluted solution). In highly-concentrated fibre suspensions [40], fibre-tofibre contact may occur. This is beyond the scope of our study.…”

Section: A Fibre Model In Dpdmentioning

confidence: 99%

Dissipative particle dynamics simulations for fibre suspensions in newtonian and viscoelastic fluids

Duong-Hong

Phan‐Thien

Yeo

et al. 2010

Computer Methods in Applied Mechanics and Engineering

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Direct simulation for concentrated fibre suspensions in transient and steady state shear flows

Cited by 47 publications

References 36 publications

Towards the simulation of mould filling with polymer composites reinforced with mineral fillers and short fibres

Towards the simulation of mould filling with polymer composites reinforced with mineral fillers and short fibres

Modeling of a Floc-Forming Fluid Using a Reversible Network Model

Dissipative particle dynamics simulations for fibre suspensions in newtonian and viscoelastic fluids

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