---
_id: '65010'
author:
- first_name: Jan
  full_name: Landgräber, Jan
  id: '64499'
  last_name: Landgräber
- 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: 'Landgräber J, Schöppner V, Brüning F. Der Einzug als Schlüssel zum Erfolg:
    Untersuchung des Einzugsverhaltens bei Spritzgießaggregaten. <i>Kunststoffe</i>.
    2026:22-25.'
  apa: 'Landgräber, J., Schöppner, V., &#38; Brüning, F. (2026). Der Einzug als Schlüssel
    zum Erfolg: Untersuchung des Einzugsverhaltens bei Spritzgießaggregaten. <i>Kunststoffe</i>,
    <i>01</i>, 22–25.'
  bibtex: '@article{Landgräber_Schöppner_Brüning_2026, title={Der Einzug als Schlüssel
    zum Erfolg: Untersuchung des Einzugsverhaltens bei Spritzgießaggregaten}, number={01},
    journal={Kunststoffe}, author={Landgräber, Jan and Schöppner, Volker and Brüning,
    Florian}, year={2026}, pages={22–25} }'
  chicago: 'Landgräber, Jan, Volker Schöppner, and Florian Brüning. “Der Einzug als
    Schlüssel zum Erfolg: Untersuchung des Einzugsverhaltens bei Spritzgießaggregaten.”
    <i>Kunststoffe</i>, 2026.'
  ieee: 'J. Landgräber, V. Schöppner, and F. Brüning, “Der Einzug als Schlüssel zum
    Erfolg: Untersuchung des Einzugsverhaltens bei Spritzgießaggregaten,” <i>Kunststoffe</i>,
    no. 01, pp. 22–25, 2026.'
  mla: 'Landgräber, Jan, et al. “Der Einzug als Schlüssel zum Erfolg: Untersuchung
    des Einzugsverhaltens bei Spritzgießaggregaten.” <i>Kunststoffe</i>, no. 01, 2026,
    pp. 22–25.'
  short: J. Landgräber, V. Schöppner, F. Brüning, Kunststoffe (2026) 22–25.
date_created: 2026-03-16T14:33:38Z
date_updated: 2026-03-16T14:33:44Z
department:
- _id: '9'
- _id: '367'
issue: '01'
language:
- iso: ger
page: 22 - 25
publication: Kunststoffe
publication_date: 2026.01.14
status: public
title: 'Der Einzug als Schlüssel zum Erfolg: Untersuchung des Einzugsverhaltens bei
  Spritzgießaggregaten'
type: newspaper_article
user_id: '59363'
year: '2026'
...
---
_id: '65041'
author:
- first_name: Jan
  full_name: Landgräber, Jan
  id: '64499'
  last_name: Landgräber
- first_name: Volker
  full_name: Schöppner, Volker
  id: '20530'
  last_name: Schöppner
citation:
  ama: 'Landgräber J, Schöppner V. Verbesserung des Einzugsverhaltens im Spritzgießprozess
    - Numerik und Experiment. In: VDI Jahrestagung Spritzgießen, ed. ; 2026.'
  apa: Landgräber, J., &#38; Schöppner, V. (2026). <i>Verbesserung des Einzugsverhaltens
    im Spritzgießprozess - Numerik und Experiment</i> (VDI Jahrestagung Spritzgießen,
    Ed.).
  bibtex: '@inproceedings{Landgräber_Schöppner_2026, title={Verbesserung des Einzugsverhaltens
    im Spritzgießprozess - Numerik und Experiment}, author={Landgräber, Jan and Schöppner,
    Volker}, editor={VDI Jahrestagung Spritzgießen}, year={2026} }'
  chicago: Landgräber, Jan, and Volker Schöppner. “Verbesserung des Einzugsverhaltens
    im Spritzgießprozess - Numerik und Experiment.” edited by VDI Jahrestagung Spritzgießen,
    2026.
  ieee: J. Landgräber and V. Schöppner, “Verbesserung des Einzugsverhaltens im Spritzgießprozess
    - Numerik und Experiment,” 2026.
  mla: Landgräber, Jan, and Volker Schöppner. <i>Verbesserung des Einzugsverhaltens
    im Spritzgießprozess - Numerik und Experiment</i>. Edited by VDI Jahrestagung
    Spritzgießen, 2026.
  short: 'J. Landgräber, V. Schöppner, in: VDI Jahrestagung Spritzgießen (Ed.), 2026.'
corporate_editor:
- VDI Jahrestagung Spritzgießen
date_created: 2026-03-18T09:38:20Z
date_updated: 2026-03-18T09:38:27Z
department:
- _id: '9'
- _id: '367'
language:
- iso: ger
status: public
title: Verbesserung des Einzugsverhaltens im Spritzgießprozess - Numerik und Experiment
type: conference
user_id: '59363'
year: '2026'
...
---
_id: '65011'
abstract:
- lang: eng
  text: "<jats:title>Abstract</jats:title>\r\n                  <jats:p>Design of
    single screw machines for polymer processing often focuses on the melt dominated
    areas of the screw. However, solids conveying is a key aspect for processes with
    high screw speeds, grooved feed sections, small screw diameters and material with
    low bulk density. In injection moulding, throughput limitations are highly relevant
    in packaging applications as due to low cooling times, plasticizing affects the
    cycle time. In addition, insufficient solids conveying is a primary cause for
    air residues in the melt and final product. Therefore, well-designed feed sections
    are required, especially as direct processing of regrind in recycling applications
    becomes more relevant due to governmental restrictions. Existing models for injection
    moulding are based on analytical equations and do not allow to assess new feed
    sections and feed opening designs, adapted to high screw speeds or regrind. In
    this paper, numerical simulations based on the Discrete Element Method (DEM),
    previously used in the field of extrusion, are carried out. In order to replicate
    the cyclic, superimposed rotation and translation of the screw, a coupled approach
    of DEM and Multibody Systems Simulation (MBS) is pursued. To verify the accuracy
    of such coupled simulations, a special test setup is added to a conventional injection
    moulding machine. Pure solids conveying is investigated, as DEM does not accommodate
    for large plastic deformations or melting. Different screw and intake designs
    as well as smooth and grooved barrels are investigated. Selected resins, pellet
    shapes and regrind are processed, varying the processing parameters and comparing
    the results to the simulation. The coupled approach replicates reality well in
    terms of throughput, confirming that DEM can be utilised to further investigate
    process phenomena and develop calculation models for solids conveying in injection
    moulding.</jats:p>"
author:
- first_name: Jan
  full_name: Landgräber, Jan
  id: '64499'
  last_name: Landgräber
- 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: Landgräber J, Schöppner V, Brüning F. Assessing solids conveying in injection
    moulding machines using coupled numerical simulations based on the discrete element
    method (DEM) and multibody systems (MBS). <i>International Polymer Processing</i>.
    2025;41(1):1-14. doi:<a href="https://doi.org/10.1515/ipp-2025-0065">10.1515/ipp-2025-0065</a>
  apa: Landgräber, J., Schöppner, V., &#38; Brüning, F. (2025). Assessing solids conveying
    in injection moulding machines using coupled numerical simulations based on the
    discrete element method (DEM) and multibody systems (MBS). <i>International Polymer
    Processing</i>, <i>41</i>(1), 1–14. <a href="https://doi.org/10.1515/ipp-2025-0065">https://doi.org/10.1515/ipp-2025-0065</a>
  bibtex: '@article{Landgräber_Schöppner_Brüning_2025, title={Assessing solids conveying
    in injection moulding machines using coupled numerical simulations based on the
    discrete element method (DEM) and multibody systems (MBS)}, volume={41}, DOI={<a
    href="https://doi.org/10.1515/ipp-2025-0065">10.1515/ipp-2025-0065</a>}, number={1},
    journal={International Polymer Processing}, publisher={Walter de Gruyter GmbH},
    author={Landgräber, Jan and Schöppner, Volker and Brüning, Florian}, year={2025},
    pages={1–14} }'
  chicago: 'Landgräber, Jan, Volker Schöppner, and Florian Brüning. “Assessing Solids
    Conveying in Injection Moulding Machines Using Coupled Numerical Simulations Based
    on the Discrete Element Method (DEM) and Multibody Systems (MBS).” <i>International
    Polymer Processing</i> 41, no. 1 (2025): 1–14. <a href="https://doi.org/10.1515/ipp-2025-0065">https://doi.org/10.1515/ipp-2025-0065</a>.'
  ieee: 'J. Landgräber, V. Schöppner, and F. Brüning, “Assessing solids conveying
    in injection moulding machines using coupled numerical simulations based on the
    discrete element method (DEM) and multibody systems (MBS),” <i>International Polymer
    Processing</i>, vol. 41, no. 1, pp. 1–14, 2025, doi: <a href="https://doi.org/10.1515/ipp-2025-0065">10.1515/ipp-2025-0065</a>.'
  mla: Landgräber, Jan, et al. “Assessing Solids Conveying in Injection Moulding Machines
    Using Coupled Numerical Simulations Based on the Discrete Element Method (DEM)
    and Multibody Systems (MBS).” <i>International Polymer Processing</i>, vol. 41,
    no. 1, Walter de Gruyter GmbH, 2025, pp. 1–14, doi:<a href="https://doi.org/10.1515/ipp-2025-0065">10.1515/ipp-2025-0065</a>.
  short: J. Landgräber, V. Schöppner, F. Brüning, International Polymer Processing
    41 (2025) 1–14.
date_created: 2026-03-16T14:34:08Z
date_updated: 2026-03-16T14:36:35Z
department:
- _id: '9'
- _id: '321'
- _id: '367'
doi: 10.1515/ipp-2025-0065
intvolume: '        41'
issue: '1'
language:
- iso: eng
page: 1-14
publication: International Polymer Processing
publication_identifier:
  issn:
  - 0930-777X
  - 2195-8602
publication_status: published
publisher: Walter de Gruyter GmbH
quality_controlled: '1'
status: public
title: Assessing solids conveying in injection moulding machines using coupled numerical
  simulations based on the discrete element method (DEM) and multibody systems (MBS)
type: journal_article
user_id: '59363'
volume: 41
year: '2025'
...
---
_id: '65012'
article_number: '104968'
author:
- first_name: Jan
  full_name: Landgräber, Jan
  id: '64499'
  last_name: Landgräber
- first_name: Florian
  full_name: Brüning, Florian
  id: '72920'
  last_name: Brüning
citation:
  ama: Landgräber J, Brüning F. Discrete element method in polymer processing – Method
    for development of material models. <i>Advanced Powder Technology</i>. 2025;36(8).
    doi:<a href="https://doi.org/10.1016/j.apt.2025.104968">10.1016/j.apt.2025.104968</a>
  apa: Landgräber, J., &#38; Brüning, F. (2025). Discrete element method in polymer
    processing – Method for development of material models. <i>Advanced Powder Technology</i>,
    <i>36</i>(8), Article 104968. <a href="https://doi.org/10.1016/j.apt.2025.104968">https://doi.org/10.1016/j.apt.2025.104968</a>
  bibtex: '@article{Landgräber_Brüning_2025, title={Discrete element method in polymer
    processing – Method for development of material models}, volume={36}, DOI={<a
    href="https://doi.org/10.1016/j.apt.2025.104968">10.1016/j.apt.2025.104968</a>},
    number={8104968}, journal={Advanced Powder Technology}, publisher={Elsevier BV},
    author={Landgräber, Jan and Brüning, Florian}, year={2025} }'
  chicago: Landgräber, Jan, and Florian Brüning. “Discrete Element Method in Polymer
    Processing – Method for Development of Material Models.” <i>Advanced Powder Technology</i>
    36, no. 8 (2025). <a href="https://doi.org/10.1016/j.apt.2025.104968">https://doi.org/10.1016/j.apt.2025.104968</a>.
  ieee: 'J. Landgräber and F. Brüning, “Discrete element method in polymer processing
    – Method for development of material models,” <i>Advanced Powder Technology</i>,
    vol. 36, no. 8, Art. no. 104968, 2025, doi: <a href="https://doi.org/10.1016/j.apt.2025.104968">10.1016/j.apt.2025.104968</a>.'
  mla: Landgräber, Jan, and Florian Brüning. “Discrete Element Method in Polymer Processing
    – Method for Development of Material Models.” <i>Advanced Powder Technology</i>,
    vol. 36, no. 8, 104968, Elsevier BV, 2025, doi:<a href="https://doi.org/10.1016/j.apt.2025.104968">10.1016/j.apt.2025.104968</a>.
  short: J. Landgräber, F. Brüning, Advanced Powder Technology 36 (2025).
date_created: 2026-03-16T14:36:01Z
date_updated: 2026-03-16T14:36:33Z
doi: 10.1016/j.apt.2025.104968
intvolume: '        36'
issue: '8'
language:
- iso: eng
publication: Advanced Powder Technology
publication_identifier:
  issn:
  - 0921-8831
publication_status: published
publisher: Elsevier BV
quality_controlled: '1'
status: public
title: Discrete element method in polymer processing – Method for development of material
  models
type: journal_article
user_id: '59363'
volume: 36
year: '2025'
...
---
_id: '59123'
author:
- first_name: Florian
  full_name: Brüning, Florian
  id: '72920'
  last_name: Brüning
- first_name: Jan
  full_name: Landgräber, Jan
  id: '64499'
  last_name: Landgräber
citation:
  ama: 'Brüning F, Landgräber J. Material and process effects on the tribological
    behavior of polymer bulk materials. In: <i>Annual Technical Conference of the
    Society of Plastics Engineers (ANTEC 2024)</i>. ; 2024.'
  apa: Brüning, F., &#38; Landgräber, J. (2024). Material and process effects on the
    tribological behavior of polymer bulk materials. <i>Annual Technical Conference
    of the Society of Plastics Engineers (ANTEC 2024)</i>.
  bibtex: '@inproceedings{Brüning_Landgräber_2024, title={Material and process effects
    on the tribological behavior of polymer bulk materials}, booktitle={Annual Technical
    Conference of the Society of Plastics Engineers (ANTEC 2024)}, author={Brüning,
    Florian and Landgräber, Jan}, year={2024} }'
  chicago: Brüning, Florian, and Jan Landgräber. “Material and Process Effects on
    the Tribological Behavior of Polymer Bulk Materials.” In <i>Annual Technical Conference
    of the Society of Plastics Engineers (ANTEC 2024)</i>, 2024.
  ieee: F. Brüning and J. Landgräber, “Material and process effects on the tribological
    behavior of polymer bulk materials,” 2024.
  mla: Brüning, Florian, and Jan Landgräber. “Material and Process Effects on the
    Tribological Behavior of Polymer Bulk Materials.” <i>Annual Technical Conference
    of the Society of Plastics Engineers (ANTEC 2024)</i>, 2024.
  short: 'F. Brüning, J. Landgräber, in: Annual Technical Conference of the Society
    of Plastics Engineers (ANTEC 2024), 2024.'
date_created: 2025-03-25T09:54:31Z
date_updated: 2025-03-27T14:51:48Z
department:
- _id: '9'
- _id: '321'
- _id: '367'
keyword:
- extrusion
- Feststoffförderung
- Reibwerte
- Spritzgießen
language:
- iso: eng
publication: Annual Technical Conference of the Society of Plastics Engineers (ANTEC
  2024)
quality_controlled: '1'
status: public
title: Material and process effects on the tribological behavior of polymer bulk materials
type: conference
user_id: '59363'
year: '2024'
...