Coupled quasi-homogeneous orthotropic laminates

York, C.B. (2011) Coupled quasi-homogeneous orthotropic laminates. Mechanics of Composite Materials, 47(4), pp. 405-426. (doi: 10.1007/s11029-011-9219-5)

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Laminate stacking sequence configurations with quasi-homogeneous properties are derived, whereby in-plane and out-of-plane stiffness properties are concomitant. The stacking sequence configurations contain equal thickness layers and identical orthotropic properties, differing only by their orientations, which are represented by standard angle- and cross-ply combinations. These simplifying assumptions are in fact representative of common design practice, but help to identify and isolate a range of highly complex physical coupling responses, which continue to be referred to collectively in the literature as bending-extension coupling. Dimensionless parameters are developed from which the elements of the extensional, coupling and bending stiffness matrices are readily calculated for any fibre/resin properties. Feasible domains of lamination parameters are also illustrated for each coupling response to complement abridged listings of stacking sequences. Finally, hygro-thermally curvature-stable configurations with quasi-homogeneous properties are identified; thus simplifying the manufacture of laminate configurations possessing tailored mechanical coupling responses.

Item Type:Articles
Keywords:Quasi-Homogeneous, Coupled Laminates, Bending-Extension, Bending-Shearing, Twisting-Shearing, Standard Angle- and Cross-ply Configurations, Iso-laminar, Lamination Parameters, Design space, Feasible region, Thermal Response, Warp-free, Hygro-thermally Curvature Stable.
Glasgow Author(s) Enlighten ID:York, Dr Christopher
Authors: York, C.B.
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
College/School:College of Science and Engineering > School of Engineering > Autonomous Systems and Connectivity
Journal Name:Mechanics of Composite Materials
ISSN (Online):1573-8922

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