Simulation of elastic and plastic properties of polymeric composites with silicate lamellar nanofiller

Abstract

Polymer/silicate nanocomposites mechanical behaviour under finite deformation is investigated at structural level. Outcomes of computer simulation are presented. Nano-filler particles are modeled represented as sheaves from the several parallel ultrathin silicate plates parted by beds of polymer (tactoids), a matrix - as a nonlinear-elastic or elastoplastic material.

The stress-strain state round separate inclusion in dependence on its orientation to a exterior load direction and properties of a matrix is researched. The problem of the macro-homogeneous elongation of a periodic cell in the form of the rectangular field with a tactoid at centre has been solved for this purpose. Conditions at which a filler particle losses of a bending stability happens in the course of macroelongation of material are defined.

The estimate of nanocomposite macro mechanical behaviour depending on properties of a matrix, filler concentration and orientation of corpuscles is spent on the basis of the gained solutions. Appropriate dependencies between macro and micro-structural parameters associations are built.