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Information × Registration Number 0225U001169, (0124U000975) , R & D reports Title Development of mathematical models and methods for solving problems of dynamics and strength of single crystal alloys and metal-matrix composites. popup.stage_title Дослідження елементів конструкцій з монокристалічних сплавів. Head Lvov Hennadii I., Доктор технічних наук Registration Date 26-01-2025 Organization National Technical University "Kharkiv Polytechnic Institute" popup.description1 Development of mathematical models of elasticity, plasticity and creep of monocrystalline alloys and metal-matrix composites. Creation of new methods of designing composite materials with the necessary parameters of anisotropy of physical properties based on the complex use of numerical methods of micromechanical analysis. Development of new methods for calculating the stress-strain state of structural elements from monocrystalline alloys under high-temperature static and dynamic loads. popup.description2  The objects of research are the processes of nonlinear deformation, oscillations and damage accumulation of structural elements made of single-crystal alloys under static and dynamic loads. The aim of the work is to develop mathematical models of elasticity, plasticity and creep of single-crystal alloys. Development of new methods for calculating the stress-strain state of structural elements made of single-crystal alloys under high-temperature static and dynamic loads. Research methods are methods for homogenizing composites based on micromechanical analysis. Methods for solving nonlinear problems of plasticity, creep, dynamic strength and fatigue of single-crystal structural elements. The influence of the orientation of crystallographic heights on the stresses, natural frequencies, creep and high-temperature strength of structural elements made of single-crystal alloys has been studied. A methodology for optimizing structural elements made of single-crystal alloys according to the criteria of high-temperature strength and means of preventing resonant modes of single-crystal blades of gas turbine engines has been created. A method for estimating the long-term static strength of single-crystal blades is proposed, which consists in obtaining equations for the distribution of the Larson-Miller parameter using experimental data for different crystallographic orientations of turbine blades. The time of failure for each of the three given crystallographic orientations of the turbine blade model is investigated. A method is described that was developed to calculate the long-term strength of single-crystal turbine blades that are under centrifugal force loading. An algorithm is proposed that allows determining the creep characteristics of an anisotropic single crystal and performing a numerical analysis of blade creep. Product Description popup.authors Ihlina Liubov S. Burlaienko Viacheslav M. Mikhlin Yurii V. Martynenko Volodymyr H. Radionova Svitlana V. popup.nrat_date 2025-01-26 Close