Research Article
Jun 1974
Stress Concentrations Near Holes in Laminates
Authors: Richard M. Barker, M.ASCE, Jon R. Dana, and Charles W. Pryor Jr., AM.ASCEAuthor Affiliations
Publication: Journal of the Engineering Mechanics Division
Volume 100, Issue 3
Abstract
Stress concentration factors are determined using a three-dimensional finite-element analysis for laminated composites pierced by circular, square, and diamond-shaped holes. Both angle-ply and bidirectional laminates are investigated for hole size to width-of-strip ratios from 0.125 to 0.417. Normal stress concentrations are found to be the least for square holes and greatest for diamond-shaped holes. Interlaminar shear stress concentrations, which cannot be determined by a two-dimensional analysis, are as large at the hole surface as those at the free edge when angle-ply laminates are utilized and the holes are large. For small circular holes, angle-ply (±45) laminates are recommended. When large holes are present, bidirectional (90/0) laminates are shown to be more efficient.
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Published In
Journal of the Engineering Mechanics Division
Volume 100 • Issue 3 • June 1974
Pages: 477 - 488
Copyright
© 1974 American Society of Civil Engineers.
History
Published in print: Jun 1974
Published online: Feb 3, 2021
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Authors
Affiliations
Richard M. Barker, M.ASCE
Prof. of Civ. Engrg., Virginia Polytechnic Inst. and State Univ., Blacksburg, Va.
Jon R. Dana
Grad. Student, Engrg. Sci. and Mech. Dept., Virginia Polytechnic Inst. and State Univ., Blacksburg, Va.
Charles W. Pryor Jr., AM.ASCE
Sr. Engr., Babcock and Wilcox, Power Generating Div., Lynchburg, Va.
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.