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Investigation of rolling contact between metal and rubber-covered cylinders governing the paper compaction process
KTH, School of Engineering Sciences (SCI), Engineering Mechanics, Vehicle Engineering and Solid Mechanics, Solid Mechanics.
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.).ORCID iD: 0000-0003-3611-2250
BillerudKorsnäs, Grums, Värmland County, Sweden.
2019 (English)In: International Journal of Mechanical Sciences, ISSN 0020-7403, E-ISSN 1879-2162, Vol. 163, article id 105156Article in journal (Refereed) Published
Abstract [en]

With the goal of partial or complete replacement of plastic components with paper-based products, 3D paper structures have seen a growing interest in industrial applications: from packaging to more complex daily life objects. However, the extensibility of paper has become a key issue within this context and is the main factor determining the formability of these products and determining the depth of the achievable shapes. The most effective way to increase paper's stretch potential is by subjecting the moist paper web to a compaction process, which can be achieved through an extensible unit that is located in the drying section of a paper machine, where the network experiences in-plane compression in the machine direction (MD), under out-of-plane lateral constraints. The objective of this work is to clarify the mechanisms governing the compression process and to evaluate the influence of various parameters on the final material properties to optimize the industrial production of extensible paper. The system operation has been simulated realistically and shows that paper experiences a compressive state passing through the nip, with plastic strains in MD direction being of the same order of the applied speed difference, which was expected experimentally in optimal conditions of compaction. Starting from an initial reference case, a sensitivity study has been performed to identify and address the following factors that may affect the compression state: (a) friction coefficients; (b) indentation level; (c) speed difference; and (d) rubber properties. The analysis of the numerical results gives an insight into the mechanisms governing the compaction operations and allows a better comprehension of the features controlling the process outcome.

Place, publisher, year, edition, pages
Elsevier, 2019. Vol. 163, article id 105156
Keywords [en]
Layered cylinders, Nip, Paper mechanics, Rolling contact, Rolling creep, Tractive rolling, Tribology, Compaction, Cylinders (shapes), Friction, Nickel-Phosphorus, Plastic products, Rubber, Compaction operations, Compression process, Friction coefficients, In-plane compression, Industrial production, Paper-based products, Rolling contacts, Rolling
National Category
Paper, Pulp and Fiber Technology
Research subject
Materials Science and Engineering; Fibre and Polymer Science
Identifiers
URN: urn:nbn:se:kth:diva-263502DOI: 10.1016/j.ijmecsci.2019.105156ISI: 000496866200046Scopus ID: 2-s2.0-85072270779OAI: oai:DiVA.org:kth-263502DiVA, id: diva2:1374686
Note

QC 20191204

Available from: 2019-12-02 Created: 2019-12-02 Last updated: 2020-03-26Bibliographically approved

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Ceccato, ChiaraKulachenko, Artem

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