Darya zadeh, S.Lvov, G. I.2016-12-022016-12-022015Darya zadeh S. Stress analysis in an infinite hydroxyapatite / titanium plate with a pressurized circular hole / S. Darya zadeh, G. I. Lvov // Vestnik Udmurtskogo Universiteta. Matematika. Mekhanika. Komp'yuternye Nauki = Вестник Удмуртского университета. Математика. Механика. Компьютерные науки. – 2015. – Vol. 25, № 2. – P. 267-279.https://repository.kpi.kharkov.ua/handle/KhPI-Press/25083The aim of the present study is to compute the macro- and microstress concentration in a reinforced biomaterial composite plate with a circular hole with respect to the volume ratio of the component materials in the composite. The contour of the circular hole and its dependency on the structure of a plate were calculated in order to study the behaviors of macro- and microstresses. In this paper, the stress around a circular hole was calculated for an orthotropic unidirectionally ber-reinforced plate with respect to the volume ratio of the component materials in the composite. Stress distribution using a theoretical method and the nite elements method was calculated. The boundary conditions applied on the contour of a circular hole are uniform normal pressure. In this present study, we use a new numerical method of determining microstresses for composite plates with a circular hole, on the boundary of which there is a uniform normal pressure. The results demonstrate the macro- and microstresses calculated for two di erent structures and the behavior of an orthotropic plate with a circular hole. The ANSYS package and the nite-element representative plate model were used in this study.encompositeunidirectional bersnumerical methodboundary conditionsstress concentrationArticle