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Information × Registration Number 0220U103531, 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 M, Registration Date 19-10-2020 Organization National Technical University "Kharkiv Polytechnic Institute" 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 mo  Product Description popup.authors Gordienko Kostjantyn S Grabovsky Andriy V Kostyk Kateryna O Kutsenko Sergiy V Ljozny Oleg S Maslijev Anton O Sachanova Yulija I Tkachuk Mykola M Shevchenko Andriy V popup.nrat_date 2021-03-17 Close