Abstract
Using an adhesive to join radiotransparent radomes with the cutout edging in the skin or with the airframe has several advantages as compared to other kinds of joining. Adhesive joints are maintainable, airtight, and their weight is small and the aerodynamic efficiency is high. Known analytical models enable finding the stress state of rectangular joints, in which the stresses are distributed uniformly across the joint width. The objective of the paper is to investigate the axisymmetrical stress state of the adhesive joint of a circular plate with a rigid edging. The plate is subjected to uniform pressure across the surface. The adhesive layer, functioning under shear and cleavage, is considered as a Winkler elastic foundation. The edging and plate are assumed isotropic and are made of dissimilar materials with different thicknesses. The structure considered has two areas: the adhesive joint area and the area beyond the joint – the overlay on the cutout. The problem for the adhesive joint area is reduced to a system of two differential equations for tangential and cleavage stresses in the adhesive. The problem solution is built in analytical form. Unknown coefficients are found from boundary conditions and the conjunction conditions on the edges of the areas. The problem considered for the first time is the generalisation of the classical Goland–Reissner model of an adhesive joint for an area with radial symmetry. Computational results demonstrated a good agreement with finite element analysis calculations, indicating that the suggested mathematical model is adequate.
Keywords
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Kurennov, S., Smetankina, N., Pavlikov, V., Dvoretskaya, D., Radchenko, V. (2022). Mathematical Model of the Stress State of the Antenna Radome Joint with the Load-Bearing Edging of the Skin Cutout. In: Cioboată, D.D. (eds) International Conference on Reliable Systems Engineering (ICoRSE) - 2021. ICoRSE 2021. Lecture Notes in Networks and Systems, vol 305. Springer, Cham. https://doi.org/10.1007/978-3-030-83368-8_28
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