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Influence of the local mass density variation on the fracture behavior of fiber network materials
Univ Grenoble Alpes, CNRS, Grenoble INP, 3SR,UMR5519, F-38000 Grenoble, France;Univ Grenoble Alpes, CNRS, Grenoble INP, LGP2,UMR 5518, F-38000 Grenoble, France.
Univ Grenoble Alpes, CNRS, Grenoble INP, 3SR,UMR5519, F-38000 Grenoble, France.
Univ Lyon, INS Lyon, CNRS, UMR5259,LaMCoS, F-69621 Villeurbanne, France.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Mechanics.
2018 (English)In: International Journal of Solids and Structures, ISSN 0020-7683, E-ISSN 1879-2146, Vol. 138, p. 236-244Article in journal (Refereed) Published
Abstract [en]

The fracture process in two fiber network materials, a low- and a high-density paper, is analyzed experimentally and numerically. The high-density paper is able to localize continued fracture to very small defects while a rather large defect is required in the low-density paper. Whereas the high-density paper has a homogeneous and limited variation in local mass density, the low-density paper is substantially more heterogeneous and has a higher local mass density variation. It is hypothesized that these fairly large regions of lower mass density govern the fracture process in paper and similar fiber network materials. A nonlocal fracture model is applied to describe and capture this length scale phenomenon and intents to simulate forces bridged over distant regions in the material via connected fibers. The suggested fracture hypothesis is consistent with experiments and hence offers an explanation to why network materials with different mass density variation may fracture differently.

Place, publisher, year, edition, pages
2018. Vol. 138, p. 236-244
Keywords [en]
Fracture, Paper, Fiber network materials
National Category
Applied Mechanics
Identifiers
URN: urn:nbn:se:uu:diva-354106DOI: 10.1016/j.ijsolstr.2018.01.016ISI: 000429764300021OAI: oai:DiVA.org:uu-354106DiVA, id: diva2:1220788
Funder
Swedish Research Council Formas, 232-2014-202Available from: 2018-06-19 Created: 2018-06-19 Last updated: 2018-06-19Bibliographically approved

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Isaksson, Per

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