The Finite Element Method is used to determine the effect of pin/hole interference fits on the elastic membranal behavior of an orthotropic plate loaded in tension through a pin. A complete contact analysis is performed to handle the nonlinear contact problem. The study encompasses two levels of interference fits, two degrees of anisotropy of the plate, and two load levels. Friction effects are not included. Experimental results from Digital Speckle Pattern Interferometry are also presented. It is shown that the stress changes in the plate vary linearly with load when no pin/plate separation occurs. It is also shown that interference fits can have beneficial effects on the static and fatigue behavior of the plate.
References
1.
Cloud, G. L.1995. Optical Methods of Engineering Analysis, Cambridge University Press.
2.
Cloud, G. L. and F. Lanza di Scalea. 1996. "Determination of Stress around a Single Pin-Loaded Hole in Fiber-Reinforced Plastic Using Phase-Stepped Digital Speckle Pattern Interferometry,"Proceedings of the XXVAIAS National Conference and International Conference on Material Engineering, Gallipoli, Italy: 319-326.
3.
Cloud, G. L. and F. Lanza di Scalea. 1997. "Stress Near Interference-Fit Composites Fasteners by Speckle Interferometry,"Abstract Proceedings of the SEM Spring Conference on Experimental Mechanics, Bellevue, Washington: 150-151.
Grant, R. J. , J. Smart, and P. Stanley. 1994. "A Parametric Study of the Elastic Stress Distribution in Pin-Loaded Lugs,"J. of Strain Analysis, 29(4):299-307.
6.
Jones, R. and C. Wykes. 1983. Holographic and Speckle Interferometry,1st edition, Cambridge University Press.
7.
Lekhnitskii, S. G. , S. W. Tsai, and T. Cheron. 1968. Anisotropic Plates, Gordon and Breach Science Publishers.
8.
Ramamurthy, T. S.1989. "Recent Studies on the Behavior of Interference Fit Pins in Composite Plates,"Composite Structures, 13(2):81-99.
9.
Sendeckyj, G. P. and M. D. Richardson. 1974. "Fatigue Behavior of a Graphite-Epoxy Laminate Loaded through an Interference-Fit Pin,"Proceedings of 2nd Air Force Conference on Fibrous Composites in Flight Vehicle Design, Tech. Rep. AFFDL-TR-74-103, Air Force Flight Dynamics Lab, WPAFB, Ohio.
