539.3 Numerical modeling of deformation and strength of sandwich composite structures with defects

Dimitrienko Y. I. (Bauman Moscow State Technical University), Yurin Y. V. (Bauman Moscow State Technical University), Fedonyuk N. N. (Krylov State Research Centre, St. Petersburg)

SANDWICH STRUCTURES, POLYMER COMPOSITE MATERIALS, MULTISCALE MODELING, DEFECTS, FINITE ELEMENT METHOD, LAYERED FIBER COMPOSITES, MONOFILAMENTS, DAMAGEABILITY.


doi: 10.18698/2309-3684-2016-3-323


The purpose of this research was to develop a multilevel model for multiscale deformation of three-layer (sandwich) structures made of polymeric composite materials such as plates with a foam based filler. We took into account the micromechanical processes of deformation and damageability in the matrix and reinforcing filler and foam, as well as macroscopic defects such as non-impregnation of the composite skins. First, we did a finite element modeling of stress-strain state, damageability and destruction of the sandwich plates with skins made of hybrid carbon fiber composites, with different types of defect such as non-impregnation, under the flexural uniform pressure. Then we found the characteristic features of the deformation and damageability process in this type of composite structures. Finally, we developed a method which can be used to calculate the deformation, damageability and destruction of sandwich plates made of polymer composite materials applied in various industries: shipbuilding, aviation, rocketry.


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Dimitrienko Y., Yurin Y., Fedonyuk N. Numerical modeling of deformation and strength of sandwich composite structures with defects. Маthematical Modeling and Coтputational Methods, 2016, №3 (11), pp. 3-23



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