Journal Published Online: 01 December 1990
Volume 12, Issue 4

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



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.

Author Information

Thompson, DM
Virginia Polytechnic Institute and State University, Blacksburg, VA
Hayden Griffin, O
Virginia Polytechnic Institute and State University, Blacksburg, VA
Vidussoni, MA
European Space Agency Technical and Scientific Centre, Noordwijk, AG, The Netherlands
Pages: 8
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Stock #: CTR10200J
ISSN: 0884-6804
DOI: 10.1520/CTR10200J