Residual stresses in multilayered composites - general overview
Małgorzata Chwał, Aleksander Muc, Adam Stawiarski, Marek Barski
Quarterly No. 3, 2016 pages 132-138
DOI:
keywords: residual stresses, multilayered composites, modeling, finite element method
abstract The appearing process-induced stresses influence the mechanical performance of a composite structure and can initiate pre-load damage. Residual stresses evaluation is particularly important in multilayered composites where the ply orientations and stacking sequences highly influence the appearing stresses. Various numerical methods are used to simulate the growth and development of arising residual stresses. The general aim of the current work is to present the fundamental relations to predict the strains and stresses during the manufacture of laminated composites. Additionally, different modeling techniques and constitutive models are presented with the intention of understanding the different phenomena taking place during processing and which models best predict the process effects. As an example, a simple finite element model of a thermally loaded laminate is proposed to present the heterogeneities in through-thickness residual stresses distribution.