Experimental Mechanics

, Volume 21, Issue 9, pp 336–340 | Cite as

Stress-concentration factors for elliptical holes near an edge

A two-dimensional photoelastic study obtained the stress concentrations for the ends of elliptical holes normal to and near the edges of finite-width plates
  • J. B. Hanus
  • C. P. Burger


Experimental and theoretical stress-concentration factor and stress-intensity factor solutions exist for a large number of hole shapes and configurations. However, little work has been done on the interaction between holes and free edges. This paper reports the results of an experimental study which investigated elliptical holes close to each edge of a tension plate. The holes were symmetric with respect to the longitudinal axis of the models and had their major axes normal to the edge of the plate. The ellipse ratio and the distance between the center and the edge were varied.

A statistical model is developed which shows that the stress concentrationK g at both ends of the ellipses is linearly dependent on a geometric function ϕ such thatK g = αΦ + γ. The values for the function ϕ are given.


Experimental Study Mechanical Engineer Statistical Model Fluid Dynamics Longitudinal Axis 
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Copyright information

© Society for Experimental Mechanics, Inc. 1981

Authors and Affiliations

  • J. B. Hanus
    • 1
  • C. P. Burger
    • 2
  1. 1.John Deere Product Engineering CenterWaterloo
  2. 2.Department of Engineering Science and MechanicsIowa State UniversityAmes

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