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How Small Is a Point Load?: A Preliminary Study of the Deformation and Failure of Cartons Subjected to Non-Uniform Loads
Örebro University, School of Science and Technology.ORCID iD: 0000-0001-6090-5125
Örebro University, School of Science and Technology.ORCID iD: 0000-0003-1042-3472
2017 (English)In: Packaging technology & science, ISSN 0894-3214, E-ISSN 1099-1522, Vol. 30, no 7, p. 309-316Article in journal (Refereed) Published
Abstract [en]

Consumer packaging made from carton board is subjected to a variety of loads as it moves through the value chain. Packaging designers need tools for predicting the strength of packages under these loading conditions. For evenly distributed loads, there are methods for measuring and estimating compression resistance that can provide useful guidance. For loads concentrated to a small area, little work has been published. The aim of this preliminary study is to aid the development of a future test method for point loads by investigating how the size of the load application site influences the mechanical behaviour of the package. Rigid spheres of a range of sizes were used to compress packages. Small spheres gave rise primary damage in the form of a vertical yield line and secondary damage in the form of a parabolic yield line. Larger spheres produced a series of parabolic yield lines of increasing size. No vertical yield line appeared for the larger spheres. The larger spheres showed a stiffness transition at a displacement that could be estimated by considering the geometry of the test.

Place, publisher, year, edition, pages
John Wiley & Sons, 2017. Vol. 30, no 7, p. 309-316
Keywords [en]
carton board; stiffness; packaging mechanics; strength; concentrated load
National Category
Mechanical Engineering
Research subject
Mechanical Engineering
Identifiers
URN: urn:nbn:se:oru:diva-56729DOI: 10.1002/pts.2300ISI: 000402996900002Scopus ID: 2-s2.0-85016452633OAI: oai:DiVA.org:oru-56729DiVA, id: diva2:1083992
Funder
Knowledge Foundation, 20140190Available from: 2017-03-23 Created: 2017-03-23 Last updated: 2017-10-18Bibliographically approved

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Eriksson, DanielKorin, Christer

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