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    Free-Edge and Ply Cracking Effect in Angle-Ply Laminated Composites Subjected to In-Plane Loads.

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    Publication date
    2007
    Author
    Zhang, D.
    Ye, J.
    Lam, Dennis
    Keyword
    Anistropy
    Materials
    Laminates
    Edge effect
    Cracking
    Interfaces
    Stress analysis
    In-plane loads
    Angle-ply laminated composites
    Peer-Reviewed
    yes
    
    Metadata
    Show full item record
    Abstract
    This paper presents a semianalytical method for the prediction of interlaminar stresses and displacements near the free edges and ply cracks in general angle-ply laminates subjected to biaxial extensions and/or in plane shear deformation. The method is based on a state space representation of the three-dimensional equations of elasticity. Numerical solutions are obtained by using layer refinement in the through thickness direction and Fourier series expansion in the other directions. By this approach, an angle-ply laminate may be composed of an arbitrary number of monoclinic layers and each layer may have different material property and thickness. This method guarantees continuous fields of all interlaminar stresses across interfaces between material layers. Numerical results are compared with those obtained from other methods. It is found that the theory provides a satisfactory approximation to the stress singularities near the free edges and ply cracks. Numerical solutions for antisymmetric laminates under extension and general laminates under shearing are new in the literature and can be used as benchmarks for validating new models.
    URI
    http://hdl.handle.net/10454/5890
    Version
    published version paper
    Citation
    Zhang, D., Ye, J., and Lam, D. (2007). Free-Edge and Ply Cracking Effect in Angle-Ply Laminated Composites Subjected to In-Plane Loads. Journal of Engineering Mechanics. Vol. 133, No. 12, pp. 1268¿1277.
    Link to publisher’s version
    http://ascelibrary.org/doi/abs/10.1061/%28ASCE%290733-9399%282007%29133%3A12%281268%29
    Type
    Article
    Collections
    Engineering and Informatics Publications

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