Volume 11, Issue 1 (March 1989)

    Free-Edge Delamination: Laminate Width and Loading Conditions Effects

    CODEN: CTROAD

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    Abstract

    The width and loading conditions effects on free-edge stress fields in composite laminates are investigated by using a three-dimensional finite element analysis. The analysis includes a special free-edge region refinement or superelement with progressive substructuring (mesh refinement) and finite thickness interply layers. The different loading conditions include in-plane and out-of-plane bending, combined axial tension and in-plane shear, twisting, uniform temperature, and uniform moisture. Results obtained indicate that axial tension causes the smallest magnitude of interlaminar free edge stress compared to other loading conditions; laminates with practical dimensions may not delaminate because of free edge stresses alone since the magnitude of these stresses are found to be quite insignificant.


    Author Information:

    Chamis, CC
    Senior aerospace scientist, NASA Lewis Research Center, Cleveland, OH

    Murthy, PLN
    Senior research associate, Cleveland State University, Cleveland, OH


    Stock #: CTR10144J

    ISSN: 0884-6804

    DOI: 10.1520/CTR10144J

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    Author
    Title Free-Edge Delamination: Laminate Width and Loading Conditions Effects
    Symposium , 0000-00-00
    Committee D30