A Finite Element Approach for Prediction of First-Ply Failure Load of Delaminated Composite Conical Rotating Shell

The present work represents a finite element method (FEM) based computational technique to predict the first-ply failure (FPF) load of delaminated thin cantilever composite conical shell under rotation. An eight-noded isoparametric shell element is employed based on Mindlin’s shallow shell theory, which includes the effect of transverse shear deformation. Multi-point constraint procedure is used to model the delaminated shell. Different first-ply failure theories like Maximum Strain (independent), Maximum Stress (independent), Maximum Stress (polynomial), Tsai-Hill, Hoffman and Tsai-Wu are used to estimate the FPF loads for both stationary and rotating shell. The precision of existing process is compared with available benchmark results. Outcomes of the existing work includes the effect of some important parameters like different delamination zone, rotational speed, aspect ratio and fiber orientation angle on FPF loads.