Theoretical aspects of paste extrusion

Horrobin, D.J.

doi:10.17863/cam.31191

Cited by 3 publications

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“…Wall friction has a small effect on the simulation profiles at this location, indicating that the wall was relatively smooth. Horrobin (Horrobin, 1999) showed significant differences when the wall was fully rough. In contrast, the two profiles differ markedly at = 0.44 (Figure 17 (a,i)), with both simulation results indicating that the paste is still close to plug flow.…”

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confidence: 99%

“…Horrobin and Nedderman (Horrobin and Nedderman, 1998) used the ABAQUS finite element analysis (FEA) platform to simulate the extrusion of a plastic material obeying von with yield stress , extruding through a smooth square-entry die while (Horrobin, 1999) investigated the influence of wall friction. They reported the following relationships for for smooth-walled dies:…”

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Measurement and modelling of wall friction in the ram extrusion of stiff microcrystalline cellulose-based pastes

et al. 2021

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Measurement and modelling of wall friction in the ram extrusion of stiff microcrystalline cellulose-based pastes

et al. 2021

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The Axisymmetric Extrusion of Solid Chocolate and the Effect of Die Geometry

Mulji¹,

Mackley

2003

Int. J. Forming Processes

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This paper investigates some of the effects of axisymmetric die geometry and flowrate during the isothermal extrusion of solid chocolate. Experimental observations, such as the material exhibiting a yield stress, flowrate independence and irreversible deformation, indicate that solid chocolate can be modelled using a rigid perfect plastic constitutive model (usually applied to the characterisation of metal forming processes). Numerically obtained extrusion pressures for a range of area reductions, using a commercial finite element package (ABAQUS) in combination with a remeshing code, are compared to experimental data to determine the uniaxial yield stress of the material. Analytical approximations are used to verify the numerical results. A study of the material behaviour in the die land, however, shows that the perfect plastic description can be inadequate in predicting extrusion pressures under certain conditions.

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Cold extrusion of powder mixtures with cold sprayed fat particles

Kropp¹

2002

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Theoretical aspects of paste extrusion

Cited by 3 publications

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Measurement and modelling of wall friction in the ram extrusion of stiff microcrystalline cellulose-based pastes

Measurement and modelling of wall friction in the ram extrusion of stiff microcrystalline cellulose-based pastes

The Axisymmetric Extrusion of Solid Chocolate and the Effect of Die Geometry

Cold extrusion of powder mixtures with cold sprayed fat particles

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