---
_id: '23865'
abstract:
- lang: eng
text: "Regarding the design of single screw extruders, the prediction of the throughput
needs to be of high accuracy. The calculation of the solids conveying throughput
is particularly important for extruders with a grooved feed section. In contrast
to smooth barrel extruders the throughput of the entire plant is determined at
the feed section. Various simplifications are necessary for an analytical modelling
of the solids conveying, e.g. the classification into conveying cases, the assumption
of solid block flow and the assumption of pressure anisotropy coefficients. In
numerical simulations with the Discrete Element Method (DEM), which has recently
been successfully used to describe solids conveying in smooth barrel extruders,
the simplifications mentioned above are not taken into account. Here, the pellets
are approximated as spherical particles or particles composed of spheres. Based
on virtual overlaps, contact models and the solution of Newton's equations of
motion, a more complex consideration of the pellet flow is possible. In each iteration
step of the simulation, the particle velocities, contact forces and derived quantities,
e.g. the mass throughput in the screw channel and the grooves or the radial pressure
build-up along the grooved barrel can be evaluated. Therefore, a DEM simulation
model can be investigated by means of statistical design of experiments in order
to convert the target values into a metamodel by regression. Long computation
times of numerical simulations will be avoided in this matter as well as too simple
assumptions of analytical approaches. The influencing parameters to be simulated
are divided into material, geometry and process parameters. Relevant material
parameters are the coefficients of friction of the polymer-polymer and polymer-steel
surface as well as the restitution coefficient and the particle diameter. The
geometry is varied in the form of the screw diameter, the channel depth and pitch,
the number of grooves and their width, depth and angle. By varying the angle,
both conventional axial grooves and helical grooves are taken into account. Finally,
the process parameters speed and backpressure are also considered in the simulations.
In order to reduce the simulation effort, irrelevant parameters are identified
in preliminary investigations.\r\n"
author:
- first_name: Volker
full_name: Schöppner, Volker
id: '20530'
last_name: Schöppner
- first_name: Florian
full_name: Brüning, Florian
id: '72920'
last_name: Brüning
citation:
ama: 'Schöppner V, Brüning F. Development of a Solids Conveying Throughput Model
for Grooved Barrel Extruders based on Discrete Element Simulations. In: Hopmann
C, Dahlmann R, eds. Advances in Polymer Processing 2020: Proceedings of the
International Symposium on Plastics Technology. Springer; 2020.'
apa: 'Schöppner, V., & Brüning, F. (2020). Development of a Solids Conveying
Throughput Model for Grooved Barrel Extruders based on Discrete Element Simulations.
In C. Hopmann & R. Dahlmann (Eds.), Advances in Polymer Processing 2020:
Proceedings of the International Symposium on Plastics Technology. Springer.'
bibtex: '@inproceedings{Schöppner_Brüning_2020, title={Development of a Solids Conveying
Throughput Model for Grooved Barrel Extruders based on Discrete Element Simulations},
booktitle={Advances in Polymer Processing 2020: Proceedings of the International
Symposium on Plastics Technology}, publisher={Springer}, author={Schöppner, Volker
and Brüning, Florian}, editor={Hopmann, Christian and Dahlmann, Rainer}, year={2020}
}'
chicago: 'Schöppner, Volker, and Florian Brüning. “Development of a Solids Conveying
Throughput Model for Grooved Barrel Extruders Based on Discrete Element Simulations.”
In Advances in Polymer Processing 2020: Proceedings of the International Symposium
on Plastics Technology, edited by Christian Hopmann and Rainer Dahlmann. Springer,
2020.'
ieee: 'V. Schöppner and F. Brüning, “Development of a Solids Conveying Throughput
Model for Grooved Barrel Extruders based on Discrete Element Simulations,” in
Advances in Polymer Processing 2020: Proceedings of the International Symposium
on Plastics Technology, 2020.'
mla: 'Schöppner, Volker, and Florian Brüning. “Development of a Solids Conveying
Throughput Model for Grooved Barrel Extruders Based on Discrete Element Simulations.”
Advances in Polymer Processing 2020: Proceedings of the International Symposium
on Plastics Technology, edited by Christian Hopmann and Rainer Dahlmann, Springer,
2020.'
short: 'V. Schöppner, F. Brüning, in: C. Hopmann, R. Dahlmann (Eds.), Advances in
Polymer Processing 2020: Proceedings of the International Symposium on Plastics
Technology, Springer, 2020.'
date_created: 2021-09-07T11:21:23Z
date_updated: 2022-01-06T06:56:02Z
department:
- _id: '9'
- _id: '367'
editor:
- first_name: Christian
full_name: Hopmann, Christian
last_name: Hopmann
- first_name: Rainer
full_name: Dahlmann, Rainer
last_name: Dahlmann
language:
- iso: eng
publication: 'Advances in Polymer Processing 2020: Proceedings of the International
Symposium on Plastics Technology'
publication_identifier:
unknown:
- '9783662608081'
publication_status: published
publisher: Springer
quality_controlled: '1'
status: public
title: Development of a Solids Conveying Throughput Model for Grooved Barrel Extruders
based on Discrete Element Simulations
type: conference
user_id: '72920'
year: '2020'
...
---
_id: '25754'
author:
- first_name: Volker
full_name: Schöppner, Volker
id: '20530'
last_name: Schöppner
- first_name: Florian
full_name: Brüning, Florian
id: '72920'
last_name: Brüning
citation:
ama: Schöppner V, Brüning F. Simulation der Feststoffförderung im Einschneckenextruder.
WAK Jahresmagazin. Published online 2019:64-67.
apa: Schöppner, V., & Brüning, F. (2019). Simulation der Feststoffförderung
im Einschneckenextruder. WAK Jahresmagazin, 64–67.
bibtex: '@article{Schöppner_Brüning_2019, title={Simulation der Feststoffförderung
im Einschneckenextruder}, journal={WAK Jahresmagazin}, author={Schöppner, Volker
and Brüning, Florian}, year={2019}, pages={64–67} }'
chicago: Schöppner, Volker, and Florian Brüning. “Simulation Der Feststoffförderung
Im Einschneckenextruder.” WAK Jahresmagazin, 2019, 64–67.
ieee: V. Schöppner and F. Brüning, “Simulation der Feststoffförderung im Einschneckenextruder,”
WAK Jahresmagazin, pp. 64–67, 2019.
mla: Schöppner, Volker, and Florian Brüning. “Simulation Der Feststoffförderung
Im Einschneckenextruder.” WAK Jahresmagazin, 2019, pp. 64–67.
short: V. Schöppner, F. Brüning, WAK Jahresmagazin (2019) 64–67.
date_created: 2021-10-07T11:03:43Z
date_updated: 2022-01-06T06:57:12Z
department:
- _id: '9'
- _id: '367'
- _id: '321'
language:
- iso: eng
page: 64-67
publication: WAK Jahresmagazin
publication_identifier:
issn:
- 1618-8357
status: public
title: Simulation der Feststoffförderung im Einschneckenextruder
type: journal_article
user_id: '44116'
year: '2019'
...
---
_id: '23866'
author:
- first_name: Volker
full_name: Schöppner, Volker
id: '20530'
last_name: Schöppner
- first_name: Florian
full_name: Brüning, Florian
id: '72920'
last_name: Brüning
citation:
ama: Schöppner V, Brüning F. Simulation der Feststoffförderung im Einzug von Einschneckenextrudern.
WAK Jahresmagazin. Published online 2019.
apa: Schöppner, V., & Brüning, F. (2019). Simulation der Feststoffförderung
im Einzug von Einschneckenextrudern. WAK Jahresmagazin.
bibtex: '@article{Schöppner_Brüning_2019, title={Simulation der Feststoffförderung
im Einzug von Einschneckenextrudern}, journal={WAK Jahresmagazin}, author={Schöppner,
Volker and Brüning, Florian}, year={2019} }'
chicago: Schöppner, Volker, and Florian Brüning. “Simulation Der Feststoffförderung
Im Einzug von Einschneckenextrudern.” WAK Jahresmagazin, 2019.
ieee: V. Schöppner and F. Brüning, “Simulation der Feststoffförderung im Einzug
von Einschneckenextrudern,” WAK Jahresmagazin, 2019.
mla: Schöppner, Volker, and Florian Brüning. “Simulation Der Feststoffförderung
Im Einzug von Einschneckenextrudern.” WAK Jahresmagazin, 2019.
short: V. Schöppner, F. Brüning, WAK Jahresmagazin (2019).
date_created: 2021-09-07T11:28:49Z
date_updated: 2022-01-06T06:56:02Z
department:
- _id: '9'
- _id: '367'
language:
- iso: eng
publication: WAK Jahresmagazin
publication_identifier:
issn:
- 1618-8357
status: public
title: Simulation der Feststoffförderung im Einzug von Einschneckenextrudern
type: journal_article
user_id: '72920'
year: '2019'
...