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Stability of Individual Phases in the Elastic Matrix of a Composite
(2023) Goryk, O. V.; Kovalchuk, S. B.; Muravlov, V. V.; Skoriak, Yu. B.; Горик, Олексій Володимирович; Ковальчук, Станіслав Богданович; Муравльов, Володимир Вячеславович; Скоряк, Юлія Борисівна
A methodology for analytical stability assessment of individual compressed flexible phases of discretely heterogeneous composite elements of engineering structures is proposed to ensure their reliable safe operation and minimise the consequences of emergencies. Based on the energy balance equation for the proportional forces of a normal resistance of the medium to the phase displacement, expressions are obtained for determining the critical force, taking into account the possible initial curvature (non-rectilinearity) of a single phase in the elastic medium of the matrix for three possible cases of stability loss. The approbation of the results of the study on the example of deformation features of reinforcing bars in a compressed reinforced concrete column is presented.