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Natural frequencies of roll-tensioned circular sawblades: Effects of roller loads, number of grooves, and groove positions
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Wood Science and Engineering.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Wood Science and Engineering.ORCID iD: 0000-0002-0145-080X
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Wood Science and Engineering.
2012 (English)In: BioResources, ISSN 1930-2126, E-ISSN 1930-2126, Vol. 7, no 2, p. 2209-2219Article in journal (Refereed) Published
Abstract [en]

Roll-tensioning effects on natural frequencies in circular sawblades for woodcutting were investigated. Adequate knowledge of these effects will enable a more precise and repeatable tuning of natural frequencies, which will ease manufacturing and maintenance of sawblades. With natural frequencies tuned to not create resonance under running conditions, longer running times and more accurate cutting are made easier. The aim of this study was to find the optimum, or most suitable, tensioning parameters for a series of tested circular sawblades and also to draw general conclusions. The effects of the magnitude of the roller load, number of grooves, and groove positions were tested. The magnitude of the roller load was measured by using a universal load cell. The roll-tensioning effects were evaluated by measuring the shift in natural frequencies of several vibration modes. Finite element analysis was performed to model natural frequencies. The magnitude of the roller load, number of grooves, and groove positions all affected the natural frequencies. Natural frequencies obtained with the finite element method were in good agreement with the experimental test results.

Place, publisher, year, edition, pages
2012. Vol. 7, no 2, p. 2209-2219
Keywords [en]
Finite element, Natural frequency, Roll tensioning, Vibration
National Category
Other Mechanical Engineering
Research subject
Wood Technology
Identifiers
URN: urn:nbn:se:ltu:diva-15536DOI: 10.15376/biores.7.2.2209-2219ISI: 000306481700064Scopus ID: 2-s2.0-84863825914Local ID: f110d569-94dc-4374-9f32-6ed5397a5d04OAI: oai:DiVA.org:ltu-15536DiVA, id: diva2:988510
Note

Validerad; 2012; 20120328 (luicri)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2023-09-16Bibliographically approved

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Cristóvão, LuísEkevad, MatsGrönlund, Anders

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