The effects of surroundings and stiffeners in the CUF-based postbuckling analysis of composite panels under in-plane shear
Ehsan Daneshkhah, Erasmo Carrera, Xiangyang Xu, Hao Yang
Abstract
In this article, the Carrera Unified Formulation and full Green–Lagrange nonlinear relations are employed to investigate the postbuckling behavior of laminated composite panels subjected to in-plane shear and combined loadings. The layerwise refined plate models are implemented by the efficient Lagrange expansion functions through the laminate thickness. An artificial surrounding area is assumed to model shear conditions. The accuracy of the presented model is validated based on the available literature. Then, the effects of stiffeners on the nonlinear response of panels are evaluated, and comprehensive assessments are provided for the equilibrium curves and stress distributions.
Topics & Concepts
Composite numberStructural engineeringNonlinear systemShear (geology)Lagrange multiplierMaterials sciencePlane (geometry)MathematicsEngineeringComposite materialGeometryMathematical optimizationPhysicsQuantum mechanicsComposite Structure Analysis and OptimizationStructural Analysis and OptimizationMechanical Behavior of Composites