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Evolution of ply cracks in multidirectional composite laminates
Department of Aerospace Engineering, Texas A&M University.
2010 (English)In: International Journal of Solids and Structures, ISSN 0020-7683, E-ISSN 1879-2146, Vol. 47, no 10, p. 1338-1349Article in journal (Refereed) Published
Abstract [en]

This paper treats evolution of ply cracks in multidirectional composite laminates subjected to a quasi-static tensile load in the longitudinal direction. Starting with pre-existing ply cracks in off-axis plies, the formation of additional cracks is analyzed by an energy-based approach. A critical laminate energy parameter associated with formation of these cracks is defined and is evaluated using experimental data for a reference cross-ply laminate. The modeling approach requires crack surface displacements, which are calculated by a three-dimensional finite element (3-D FE) analysis performed on a suitable representative volume of the given cracked laminate. The model predictions agree well with experimental data for [0 / ± θ 4 / 0 1 / 2] s and [0 / 90 / ∓ 45] s laminates. A parametric study is conducted to evaluate effects of ply thickness and ply stacking sequence on damage evolution in [0 m / 90 n / ∓ θ p] s laminates.

Place, publisher, year, edition, pages
2010. Vol. 47, no 10, p. 1338-1349
Identifiers
URN: urn:nbn:se:ltu:diva-10146DOI: 10.1016/j.ijsolstr.2010.01.016Local ID: 8e644969-b03b-4a32-b0bc-f6ac103ef738OAI: oai:DiVA.org:ltu-10146DiVA, id: diva2:983086
Note
Upprättat; 2010; 20130124 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-01-16Bibliographically approved

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Talreja, Ramesh

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