Numerical Analysis of the Effect of Added Hole on the Stress Concentration of a Perforated Plate and Determining of Its Optimum Location

Abstract:

The aim of this work was to investigate Stress Concentration Factor (SCF) variations induced by adding of holes in a perforated base plate subjected to uniaxial tension load, using Finite Element Method (FEM). Analyses were applied in 2D for different diameters, orientation angels and distances of added holes from the base hole. A parametric model in ANSYS finite element software was used to calculate the SCFs and the differences between SCFs have been shown in various graphs. To investigate the variation of SCF in perforated base plate, two holes with the same diameter were located symmetrically to the longitudinal axis with different angles and distances from the base hole. The results showed that by adding holes with a proper diameter, orientation angles and distances from the base hole, the SCFs can be reduced. Using the obtained graphs and corresponding to the base hole diameter the most adequate diameter and its position was determined. Obtained results for special statuses had a good agreement with the graphs of Peterson’s stress concentration factors.

• Periodical: Key Engineering Materials (Volumes 452-453)
• Pages: 793-796
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.452-453.793
• Online since: November 2010
• Authors: Mohammad Reza Khoshravan, A. Khalili, M.J. Razavi
• Keywords: Finite Element, Perforated Plate, Stress Concentration

References

[1] S. Singh: Theory of Elasticity, KHANA Publishers, (1998) pp.146-149.

[2] W.D. Pilkey: Peterson's Stress Concentration Factors, second edition, John Wiley, New York, NY(1997).

[3] M. R. Khoshravan, M. Samaei, A. Khalili: Numerical Analysis of the Situation of Holes for Decreasing the Stress Concentration in Composite Plates in Bolted Joints. 9th Annual Iranian Aerospace Society conference, Tehran, (2010).

[4] N.A. Noda, Y. Takase: Stress concentration formula useful for all notch shape in a round bar (Stress concentration formula useful for all notch shape in a round bar), International Journal of Fatigue 28 (2006), pp.151-163.

DOI: 10.1016/j.ijfatigue.2005.04.015

[5] C. She, W. Guo : Three-dimensional stress concentrations at elliptic holes in elastic isotropic plates subjected to tensile stress, International Journal of Fatigue 29 (2007), pp.330-335.

DOI: 10.1016/j.ijfatigue.2006.03.012

[6] A. Murdani, C. Makabe, A. Saimoto, Y. Irei: Stress concentration at stop-drilled holes and additional holes, Engineering Failure Analysis 15 (2008) pp.810-819.

DOI: 10.1016/j.engfailanal.2007.11.002