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Composites: Mechanics, Computations, Applications: An International Journal

ISSN Print: 2152-2057
ISSN Online: 2152-2073

Composites: Mechanics, Computations, Applications: An International Journal

DOI: 10.1615/CompMechComputApplIntJ.v4.i4.50
pages 345-364

NUMERICAL SIMULATION OF MICRODESTRUCTION AND STRENGTH CHARACTERISTICS OF SPATIALLY REINFORCED COMPOSITES

Yu. I. Dimitrienko
Computational Mathematics and Mathematical Physics Department, Bauman Moscow State Technical University, 2-nd Baumanskaya Str., 5, Moscow, 105005, Russia
S. V. Sborshchikov
N. E. Bauman Moscow State Technical University, Moscow, Russia
A. P. Sokolov
N. E. Bauman Moscow State Technical University, Moscow, Russia

ABSTRACT

The results of numerical finite element modeling of microdestruction of spatially reinforced composite materials, based on the method of asymptotic averaging and the method of finite element solution of local problems on periodicity cells, are presented. The modified Pisarenko−Lebedev model has been used as a criterion of the matrix strength, and the model of damaging of a monofibers' bundle has been applied as a criterion of the reinforcement fibers strength. It has been shown that this model allows analysis of different scenarios of composite microdestruction with change in loads for different combinations of elasticity and strength properties of the matrix and fibers. Numerical examples demonstrating the capacities of the developed model for numerical investigations of microdestruction of 3D orthogonally reinforced composites are presented. Comparison of the calculated results with the experimental data has been made.