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An analysis of strain localization and formation of face wrinkles in edge-wise loaded corrugated sandwich panels using a continuum damage model
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
SCA R and D Centre, Box 716, SE-851 21 Sundsvall, Sweden.
Department of Mechanical Engineering, Florida Atlantic University, Boca Raton, FL 33431, USA .
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences. Applied Mechanics, The Ångström Laboratory, Uppsala University, Box 534, SE-751 21 Uppsala, Sweden .
2015 (English)In: International Journal of Solids and Structures, ISSN 0020-7683, E-ISSN 1879-2146, Vol. 56-57, p. 248-257Article in journal (Refereed) Published
Abstract [en]

This paper examines the compressive failure mechanism in edge-to-edge loaded corrugated sandwich panels. The formation of face wrinkles is specifically considered. A detailed finite element model of face sheets and web core of a sandwich panel was developed to provide insight on the failure mechanism. A gradient enhanced continuum damage theory was implemented to capture length effects caused by the material microstructure including formation of damage in the face sheets and core. Distributions of strains in the face sheets determined from finite element analysis (FEA) are compared to experimentally measured strains. The predicted location and orientation of the face wrinkle, as indicated by high values of the second principal strain, agrees well with experimental observations.Load vs. out-of-plane deflection curves obtained from FEA with the gradient enhanced damage material model are compared to those obtained from a linear-elastic material model and experimentally determined curves. The gradient enhanced solution gives qualitatively better agreement with experimental results, although the magnitudes of strains are less than those determined experimentally.

Place, publisher, year, edition, pages
2015. Vol. 56-57, p. 248-257
Keywords [en]
Buckling, Compression strength, Corrugated board, Gradient enhanced damage modeling
National Category
Applied Mechanics
Identifiers
URN: urn:nbn:se:miun:diva-21908DOI: 10.1016/j.ijsolstr.2014.10.029ISI: 000349502600020Scopus ID: 2-s2.0-84921433231OAI: oai:DiVA.org:miun-21908DiVA, id: diva2:715786
Note

Published online 27th March 2014.

Available from: 2014-05-06 Created: 2014-05-06 Last updated: 2017-08-15Bibliographically approved
In thesis
1. On failure mechanisms and strength predictions in corrugated board structures
Open this publication in new window or tab >>On failure mechanisms and strength predictions in corrugated board structures
2014 (English)Doctoral thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Sundsvall: Mid Sweden University, 2014
Series
Mid Sweden University doctoral thesis, ISSN 1652-893X ; 190
National Category
Applied Mechanics
Identifiers
urn:nbn:se:miun:diva-21909 (URN)9789187557620 (ISBN)
Public defence
2014-05-27, M108, Mittuniversitetet, Sundsvall, 10:15 (English)
Supervisors
Available from: 2014-05-12 Created: 2014-05-06 Last updated: 2018-03-23Bibliographically approved

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Åslund, PärIsaksson, Per

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