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Bearing Strength Analysis of Pin-Loaded Elliptical Holes in Laminated Composite Joints

[+] Author Affiliations
O. Aluko

University of Michigan-Flint, Flint, MI

H. A. Whitworth

Howard University, Washington, DC

Paper No. IMECE2011-62507, pp. 245-252; 8 pages
  • ASME 2011 International Mechanical Engineering Congress and Exposition
  • Volume 8: Mechanics of Solids, Structures and Fluids; Vibration, Acoustics and Wave Propagation
  • Denver, Colorado, USA, November 11–17, 2011
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5494-5
  • Copyright © 2011 by ASME


An analysis was performed to predict bearing strength and mode of failure of pin loaded orthotropic plates with elliptic holes of varying sizes using two dimensional stress analyses and a characteristic curve model. The stresses required to analyze joint failure were obtained by utilizing complex stress functions that were determined from assumed displacement expressions that satisfy the boundary conditions around the hole. Three different joint geometries with major-to-minor diameter ratios ranging from 1 to 5 were evaluated and the analysis revealed that the joint strength was found to vary with increasing major-to-minor diameter ratios. The material properties of graphite/epoxy laminates were used in this investigation.

Copyright © 2011 by ASME



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