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Methodology for calculating the strength characteristics of composites

Keywords:

Yu.S. Belov – Ph. D. (Phys.-Math.), Associate Professor, Kaluga branch of the Bauman MSTU. E-mail: ybs82@mail.ru S.A. Ginzgeimer – Ph. D. (Phys.-Math.), Associate Professor, Kaluga branch of the Bauman MSTU. E-mail: ginzgeymer@mail.ru M.B. Loginova – Ph. D. (Phys.-Math.), Associate Professor, Kaluga branch of the Bauman MSTU. E-mail: loginovamb@gmail.com A.V. Ponomarev – Post-graduate Student, Kaluga branch of the Bauman MSTU. E-mail: palex@mail.ru S.V. Rybkin – Ph. D. (Phys.-Math.), Associate Professor, Kaluga branch of the Bauman MSTU. E-mail: sr@kaluga.net S.G. Gurov – Student, Kaluga branch of the Bauman MSTU. E-mail: gurovSG@gmail.com


It is discussed the main physical and chemical characteristics of polyimides. Prospects of development of constructional materials on the basis of the aromatic poliimid reinforced by filamentary diamond crystals are considered. The basic characteristics of the filamentary diamond crystals are provided. A mathematical model is developed for the calculation of the strength characteristics of composite reinforced materials. Calculations of the key physical parameters of a composite are given: the weight of the composite, fiber and matrix. The analytical expressions to calculate the stiffness of composite materials reinforced with uniform properties of fiber and matrix in the longitudinal and cross loading are received. The analysis of dependences of values of the longitudinal and cross module Young's modulus of the volume fraction of filamentary crystals in the composite material. It is shown that the values of Young's modulus in the longitudinal loading have a linear relationship, while at cross loading at first weak linear growth, and then sharp exponential increase.
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