Abstract
Many problems of stress concentration have alreadybeen solved for elastic isotropic shells with holes of various shapes. Theoretical results, pertaining primarily to shallow spherical, cylindrical, and conical shells with circular holes, were obtained by methods involving separation of variables in the classical formulation [6]. For shells with noncircular curvilinear (elliptical, square, triangular, and others with round corners) holes was used the method of perturbation of the contour shape according to Guz' [3]. The most nearly complete survey of theoretical and experimental studies made so far concerning the problem of stress concentration in isotroFicand orthotropic elastic and inelastic shells can be found in [4], the method~ used and solutions to specific problems in linear or nonlinear formulation being expounded in the all-encompassing monograph [5].
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