This paper presents a recently developed analytical model for assessing theload attractions on bonded composite repairs of composite structures. Basicformulation of the analytical model considers the bonded composite repairs of alaminated anisotropic elastic thin plate. The repair patch was also assumed to belaminated anisotropic elastic. Load attractions around the elliptical boundary of arepair patch were computed, when the repaired plate was under a combined loading ofin-plane shearing and stretching, and out of plane bending. The repair patch wasmodeled as an inhomogeneity of the plate within the content of the Kirchhoff theory.This problem of two-dimensional deformations of anisotropic elastic materials wasreduced to the problem of finding complex eigenvalues and their correspondingeigenvectors from an eigenrelation, which is a function of the elastic stiffness.The model is capable of simulating an extremely soft patch, e.g. with modulusbeing 10~(-6) of the laminate, therefore, the model can be used for damage assessment todetermine if repairs are indeed required. Comparisons with known classic solutionsfor the problems of laminate plates with open holes are presented. Effects of the patchstiffness on the load attractions are studied for various repair configurations, includinga repair with a rigid patch, to demonstrate the versatility of the analytical model. Inaddition, effect of the aspect ratio of the elliptical patch was investigated by studyingcases with various aspect ratios, i.e., the elliptical patch is skewed from one directionto the other. As the aspect ratio of an elliptical open hole deviates significantly fromthe value of 1 for a circle hole, the solution exhibits some near singular behaviorfound in the crack problem. The load attractions are computed for every point aroundthe boundary of the patch.
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