Estudo Do Efeito Da Nano-Modificação Da Matriz No Estado De Tensão-Deformação Residual De Painéis De Plástico Reforçado Com Fibra De Carbono

The influence of nanomodification of carbon plastic on the residual stress-strain state (SSS) after molding has been studied. Due to the high anisotropy of the physical and mechanical properties the nonuniform thickness and direction of shrinkage of the composite layers occur during cooling. This leads to the emergence of residual deflections and internal stresses in the composite parts. A method for estimating the influence of various physicomechanical factors on residual stresses and deformations has been developed. Based on the data obtained recommendations can be made for the creation of a rational structure of the composite and methods for reducing residual stresses and curvatures. The main factor leading to the formation of residual SSS is the anisotropy of properties of carbon plastic in which the rigidity and temperature properties of the unidirectional layer in the longitudinal and transverse directions are significantly different. Depending on the structure of the package and the characteristics of the components of the monolayer linear deformation of the layers can cause panel curvature and to residual temperature stresses. The results of analytical and numerical modeling of residual deformations in panels with an asymmetric reinforcement scheme are presented.