Другие журналы
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Sborschikov
Simulation of Viscoelastic Properties of Fibrous Laminated Polymer Composite Material
Engineering Education # 11, November 2014 DOI: 10.7463/1114.0734246 pp. 748-770
Multiscale Finite-Element Modeling of Sandwich Honeycomb Composite Structures
Engineering Education # 07, July 2014 DOI: 10.7463/0714.0717805 pp. 243-265
Modeling microstructural destruction and strength of ceramic composites based on the reaction-bonded SiC
Engineering Education # 11, November 2013 DOI: 10.7463/1113.0659438 Using a multi-scale homogenization method, a three-level model was developed for ceramic composite materials based on the reaction-bonded SiC. Numerical simulation was performed with the use of the finite-element method for solving a set of local problems over the periodicity cells of three structural levels. Tensor fields of stress concentration were computed in matrices and fillers. A new strength criterion of a matrix and fillers at multi-axis stress state was applied; this criterion takes into account a significant difference (more than ten times) between strength features of ceramics under tension and compression. A model that takes into account a scale effect of the strength of ceramic composites was proposed. Numerical investigation of sequential microstructural destruction of ceramic composites up to the final fracture was conducted. Computations demonstrated that at the presence of a polydisperse structure of ceramics, a change in concentrations of large-scale fractions plays less considerable role than in the case of small particles fraction.
Modeling of thermo-elastic properties of composites with alumino-chromic phosphate matrices
Engineering Education # 11, November 2013 DOI: 10.7463/1113.0623564 A mathematical multi-level model for calculating thermo-elastic properties of textile composites with alumino-chromic phosphate matrices under high temperatures was developed. This model takes into account physical-chemical transformations occurring in an alumino-chromic phosphate binder and glass fibers under a high temperature. Comparison of calculation results with experimental data was carried out; it was shown that the developed model allowed to predict a complicated nonlinear character of changes in elastic properties of composites under heating up to 1600 К. The developed model could be used for prediction of elastic properties of composites with alumino-chromic phosphate matrices under complicated heating modes.
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