The effect of interference fits in composite pin-joints

The Finite Element Method is used to determine the effect of pin/hole inter ference fits on the elastic membranal behavior of an orthotropic plate load ed in tension through a pin. A complete contact analysis is perform ed to h andle the nonlinear contact problem. The study encompasses two levels of in terference fits, two degrees of anisotropy of the plate, and two load lever s. Friction effects are not included. Experimental results from Digital Spe ckle 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.