Cross-Ply Laminates with Holes in Compression: Straight Free-Edge Stresses Determined by Two- to Three-Dimensional Global/Local Finite Element Analysis

    Volume 12, Issue 4 (December 1990)

    ISSN: 0884-6804

    CODEN: CTROAD

    Page Count: 8


    Thompson, DM
    Graduate assistant and associate professor, Virginia Polytechnic Institute and State University, Blacksburg, VA

    Vidussoni, MA
    consulting engineer, European Space Agency Technical and Scientific Centre, Noordwijk, AG

    Hayden Griffin, O
    Graduate assistant and associate professor, Virginia Polytechnic Institute and State University, Blacksburg, VA

    Abstract

    A practical example of applying two- to three-dimensional (2- to 3-D) global/local finite element analysis to laminated composites is presented. Cross-ply graphite/epoxy laminates of 0.1-in. (0.254-cm) thickness with central circular holes ranging from 1 to 6 in. (2.54 to 15.2 cm) in diameter, subjected to in-plane compression were analyzed. Guidelines for full 3-D finite element analysis and 2- to 3-D global/local analysis of interlaminar stresses at straight free edges of laminated composites are included. The larger holes were found to reduce substantially the interlaminar stresses at the straight free-edge in proximity to the hole. Three-dimensional stress results were obtained for thin laminates which require prohibitive computer resources for full 3-D analyses of comparative accuracy.


    Paper ID: CTR10200J

    DOI: 10.1520/CTR10200J

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    Author
    Title Cross-Ply Laminates with Holes in Compression: Straight Free-Edge Stresses Determined by Two- to Three-Dimensional Global/Local Finite Element Analysis
    Symposium , 0000-00-00
    Committee D30