An Improved Hybrid Full-Field Stress Analysis of Circularly Perforated Plate by Photoelasticity and Finite Element Analysis

Abstract:

hybrid experimental-numerical method is presented for determining the stresses around a circular hole in a finite-width, tensile loaded plate. Calculated fringes obtained by FEA provided the information about the external boundary of the hybrid element, and those fringes on straight lines were used for hybrid analysis. In order to see the effects of varying stress field, different numbers of terms in a power-series representation of the complex type stress function were tested. Actual and reconstructed fringes were compared. The hybrid results were highly comparable with those predicted by FEA. The result showed that this approach is effective and promising because isochromatic data along the straight lines in photoelasticity can be conveniently measured by use of phase shifting photoelasticity.

• Periodical: Key Engineering Materials (Volumes 326-328)
• Pages: 1209-1212
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.326-328.1209
• Online since: December 2006
• Authors: Tae Hyun Baek, Seung Kee Koh, Tae Geun Park
• Keywords: Complex Stress Function, Conformal Mapping, Fringe Sharpening, Hybrid Stress Analysis, Isochromatic Fringe, Non-Linear Least Square Method, Photoelasticity

References

[1] T.D. Gerhardt: ASME J. of Appl. Mech., Vol. 51 (1984), p.804.

[2] T.H. Baek, M.S. Kim, J. Rhee and R.E. Rowlands: JSME Int. J, Ser. A, Vol. 43 (2000), p.327.

[3] J.W. Dally and W.F. Riley: Experimental Stress Analysis, 3 rd Ed., McGraw-Hill (1991).

[4] ABAQUS/Standard, Hibbitt, Karlsson & Sorensen, Inc., USA.

[5] T.H. Baek, M.S. Kim, Y. Morimoto and M. Fujigaki: KSME Int. J., Vol. 16 (2002) p.1207.