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Nowadays, more and more elements originally made of metal are replaced with plastic parts. This is due to the low density of polymer materials, their high relative strength, as well as the ease of forming (complicated elements can be produced in one operation). The disadvantages of plastics are low rigidity and very non-linear material properties. To increase rigidity, a glass fiber filler is used above all. Its addition to the polymer allows to increase the rigidity from four to six times (depending on the type and amount of fiber added, in the case of carbon fiber, it is possible to achieve up to 10-fold improvement in rigidity), due to which the manufactured elements have less deformability with a slight increase in basis weight [1, 2]. The disadvantage of using glass fibers is to reduce the maximum elongation of details and their impact strength. In addition, the introduction of glass fibers into the polymer matrix results in the anisotropy of the material depending on the orientation of the fiber, which in turn depends on the method of filling the cavity forming the mold. In addition, it complicates the mathematical description of the phenomenon of deformation under the influence of applied loads.

Influence of material models on quality of results of plastic parts’ mechanical analyses