Geometrically Non-Linear Thermo-Elastic Analysis of Variable Angle Tow Composite Plates Thorugh Layerwise Models

Composite materials are widely used in the engineering field due to their valuable specific properties and the adaptability of fiber orientation and lay-up to specific load conditions. The tailorability of composite materials is increased with Variable Angle Tows (VAT) composite materials, in which fiber deposition can follow a curved path. These properties lead to a higher anisotropy, and non-linear analyses are required to ensure a good description of the behaviour. The study focuses on the post-buckling configuration of the VAT model and examines the impact of curved fiber paths. The analyses are conducted to compare high-order theory for describing the nonlinear behaviour of the VAT composite structure. Additionally, the post-buckling shape of VAT plates is thoroughly explored, leading to the selection of the most accurate model for characterizing plate behaviour.