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Information × Registration Number 0219U003654, 0117U004970 , R & D reports Title Performance enhancement of military equipment through analysis and synthesis of material properties based on micro structural models popup.stage_title Head Tkachuk Mykola, Registration Date 07-02-2019 Organization The Kharkov state polytechnical university popup.description2 The research object - properties of composite materials in military equipment as a result of simulation of statistical sets of microparticles in the process of interaction with each other. The object of the research - properties of composite materials in military equipment resulting from modeling of statistical sets of microparticles in the process of interaction with each other. The purpose of the research is to improve service performance of military equipment elements on the basis of theoretical foundations of statistical mechanics of composite materials and the formulation of mathematically rigorous and physically adequate of constitutive models of an ansemble of deformed and interacting microobjects, as well as the development of variational formulation for equilibrium response of such statistical ensembles and new homogenization models that transfer mechanical properties from micro to macro level. Methods of research - methods of statistical description of random microstructures taking into account the properties of elements, orientation and length of fibers, amplitude and curvature of roughness etc .; variational methods of minimom of total averaged energy for determining the mechanical behavior of microstructure and calculating the homogeneous properties of materials at finite deformations; methods of finite and boundary elements for the application of the constructed models to the analysis of macroscopic solid bodies. The scientific novelty of the work is the new approach to modeling material behaviour, which is characterized by a combination of multi-scale (micro-macro) models within the framework of a unified theory of deformation of fiber materials; taking into account nonlinear micromechanisms of the response of the materials to the load; formation of an improved variational statement of the problem, which makes it possible to perform a reliable and efficient algorithmic realization of the computational model; verification of statistically averaged models with detailed discrete models taking into account the actual structure of the material; the establishment of new patterns of behavior of fibrous and porous materials and compositions on their basis. The results of the work are methods of constructing physically grounded models of materials with microstructure and means of computer simulation of military equipment elements, in which new materials are used to achieve enhancement of characteristics. Product Description popup.authors Бондаренко Марина Олександрівна Грабовський Андрій Володимирович Жадько (Глущенко) Марія Олесандрівна Князєв Сергій Анатолійович Мейлехов Андрій Олександрович Постельник Ганна Олександрівна Скріпченко Наталія Борисівна Ткачук Микола Миколайович popup.nrat_date 2020-04-02 Close